![[Search a list of Patent Appplications for class 91]](../as.gif) CLASS 91, | MOTORS: EXPANSIBLE CHAMBER TYPE |
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SECTION I - CLASS DEFINITION
This class is limited to motors for converting the energy of a pressure fluid into mechanical work in which a charge of simple pressure fluid is admitted to an expansible chamber, the expansion of said chamber converting into work only the original energy of the charge, the charge after expansion of said chamber being exhausted to some place other than whence it came, and in which no energy is extracted from the charge except by expansion of the chamber, said motors when of the reciprocating or oscillating type including control of the fluid.
| (1) Note. Claims Not Controlling in Patents Prior to 1936. Patents issued prior to 1936 have not necessarily been classified by claims so that the placement of these patents does not necessarily indicate lines of classification. However, most of the patents regardless of their age have been placed in accordance with their claimed subject matter. PLACEMENT OF PATENTS A. Involving Combination and Subcombination Subclasses: In many instances the schedule of this class provides for a combination which requires a given subcombination, and elsewhere below provides for the subcombination. The following rule has been followed as to the placement of the original patent, and as to cross-referencing, and should be followed in the future. Where the combination subclass requires the same subcombination as is provided for in the subcombination subclass, i.e., subcombination defined with the same specificity in both subclasses, a patent disclosing the combination is placed as an original in, or under, the combination subclass regardless of whether the claims are directed to the combination or subcombination and is not cross-referenced to the subcombination subclass. A patent disclosing only the subcombination and claiming same is placed as an original in the subcombination subclass and is not cross-referenced to the combination subclass. This rule is applicable only in instances where there is but a single subcombination subclass, i.e., no indented subclasses, but the combination subclass may be further subdivided into indented subclasses. The prime feature of this situation is that the subcombination must, by definition, be of equal specificity in the two subclasses. A search for the subcombination, at least in the case where it is adapted to be used in the combination, of necessity involves all of the patents in the combination subclass. Under this system of placing the patents a complete search of the combination can be made in the combination subclass, and of the subcombination in both subclasses without the addition to the search files of the otherwise necessary cross-reference copies. The subclasses involved in this combination-subcombination relationship have been indicated in the schedule by numbers in parenthesis, as explained in a paragraph after the class title. Exemplary of this situation in the indented subclasses (223-229) provide for a distributor (valve) in the piston of a cyclically operable motor combination while subclass 422 requires only a valved piston subcombination. As between these subclasses any patent having a disclosed cyclically operable motor is placed as an original in subclass 222 or one of the indented subclasses regardless of whether the means which makes the motor cyclically operable is claimed and is not cross-referenced in subclass 422. A complete search for the subject matter provided for in subclass 422 of necessity involves all of the patents in subclasses 222-229. B. Involving Ancillary or Auxiliary Expansible Chamber Motor: In many instances the claimed motor which provides the basis of classification for a patent in Class 91 is provided with another expansible chamber motor which merely performs an ancillary or auxiliary function for the main motor. Illustrative of such functions are motor valve or lock, or lubricator actuation. In such cases the structure or operation of the ancillary motor does not constitute a basis for original classification of the patent in the Class 91 schedule unless the patent includes a claim to the auxiliary motor, per se. However, the patent may be cross-referenced on the basis of the auxiliary motor. For example, see subclasses 6-33 and 282-283. Subclasses 6-33 provide for fluid supply through diverse paths to a single expansible chamber. In this case the chamber must be a chamber of the motor which causes the patent to be classified in Class 91. Subclasses 282-283 provide for the same type of supply to a motor chamber, but in this case the motor is an auxiliary motor in that it actuates the distributor of another motor. This type of control of a distributor motor does not cause classification of the patent as an original in subclasses 6-33, but cross-reference to subclasses 6-33 is appropriate. |
SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
Combinations With Load Devices.
Inasmuch as the basic purpose of a motor is to operate a load the inclusion of the load in the claim by name only or in general terms will not exclude a patent from this class. An exception to this general rule exists where the load on the motor is a valve. The combination of an expansible chamber motor and a valve as the load driven thereby, even if the valve is claimed by name only, is excluded from this class and will be found in Class 137, Fluid Handling, or Class 251, Valves and Valve Actuation. A second exception exists where the claimed nominal load on the motor is an expansible chamber means solely disclosed as the master of a pulsator. This combination is classifiable in Class 60, subclasses 533-594.
This line also applies where the load is a tool; that is, a named tool driven by the motor will not exclude a patent from this class if no tool details are recited. However, if a support for the work being acted upon by the tool is claimed, classification in the appropriate tool class results even though both the tool and the support are claimed by name only. Also see the Search Class 173 note in section III below for the line with regard to a nominally claimed tool driven by an expansible chamber motor combined with other features such as work cleansing or tool feeding.
No attempt has been made to review the classification of all patents found in classes relating to loads adapted to be driven by a motor. Thus, it is to be noted that the original classification of all patents is not consistent with the above statement as to nominally claimed loads and this particularly applies as to classes not recently reclassified. In those instances in which a body of art is known to exist in a given class, in which the load on the motor is claimed only nominally, and especially where the classification of that class provides for a fluid motor actuator for the device, currently issuing patents will not be classified as originals in Class 91 even though the load is only nominally claimed.
The means which transmits power from the working member of the motor to the load to be driven, e.g., linkage, gearing, etc., is not considered to be the load for the motor. See the Search Class 74 note in the class definition of Class 91 for a further discussion of this subject.
| RELATIONSHIP TO CLASS 92 Class 92 is directed to expansible chamber devices, per se, and is related to Class 91 as a subcombination thereof. Class 92 is limited to expansible chamber devices in which the working member has an oscillating or reciprocating motion to expand and contract the expansible chamber. Thus, Class 92 cannot take the subcombination of any Class 91 motor in which the working member is of the rotating type as defined in subclass 58 of Class 91. With respect to expansible chamber motors in which the working member has a reciprocating or oscillating motion to expand and contract the expansible chamber, Class 92 will take those patents in which no control of the motive fluid by a valving action is claimed. Thus, any claimed valving of motive fluid of an expansible chamber motor in sufficient to preclude classification is Class 92 even though the valving claimed may not be all of the valving necessary to cause the motor to operate in the intended manner. However, if a claim is for an expansible chamber motor driving a specifically claimed Class 92 device, then classification is in Class 92 regardless of the details of the expansible chamber motor recited. See Class 92, subclass 3. For the classification of various subcombination features of Class 92 devices elsewhere classified see the class definition and appropriate notes in Class 92. With regard to claim interpretation to determine whether valving is claimed to cause classification in Class 91, or is not claimed thus permitting classification in Class 92 the following criteria have been followed: 1. Claims which include a limitation such as "means for supplying fluid to the motor" or "means supplying fluid to the motor" are construed as requiring no more than the conduits or ports which supply the fluid and would, therefore, not be interpreted as including valving for Class 91. 2. Claims which include a limitation similar to that in (1) above, but with a further limitation which indicates a change in supply of working fluid such as--alternately, periodically, intermittently, pulsing, fluctuating, reversing flow, etc.--are construed as necessarily including more than a mere conduit or port and are excluded from Class 92. These patents would thus be classified on their claimed disclosure of what performs the noted change in the supply. Thus, a patent claiming "means (for) alternately supplying motive fluid to the motor" would be classified in Class 91 if said means is disclosed as a valve. 3. A port in an expansible chamber wall which is disclosed as controlled by the working member as, for example, an exhaust port which is overrun by a piston, together with the working member constitutes valving for Class 91. If such a port is claimed classification is in Class 91 regardless of whether the claim sets forth that the working member controls the port. RELATIONSHIP TO CLASS 60 The general line between Class 91 and Class 60 is that if subject matter relating to power production comprising more than an expansible chamber motor or more than a plurality of such motors is claimed, classification is in Class 60 if otherwise appropriate. More specifically the line may be categorized as follows: A. Plural or combined type motors (1) The combination of a motor classifiable, per se, in Class 91 with a motor of another type (including a pulsator) i.e., one which, per se, would be classified in another motor class, is classified in Class 60. See Class 60 subclasses 698-720. However, the combination of a Class 91 type motor with a second motor which performs an ancillary function only of the Class 91 type motor, e.g., valve operating motor, etc. and provides no power for external use is not excluded from Class 91 even if the second motor is of another type (e.g., electric motor). (2) The combination of a plurality of Class 91 type motors or a Class 91 type motor having a plurality of working members, e.g., pistons, etc., is classified in Class 91. See the Search Class 60 note in subclass 170 of Class 91 for a further statement of this line. B. Motive fluid source, modification or exhaust treatment (1) Pumps. The inclusion in a claim of a pump broadly which provides motive fluid for utilization by the Class 91 motor does not preclude classification in Class 91. The following examples of terminology have been considered to be nominal inclusion of a pump and if so claimed would not preclude classification in Class 91: (a) a pump; (b) a rotary pump; (c) a motor driven pump; (d) a motor driven rotary pump; (e) an internal combustion engine having an intake manifold (as a source of vacuum); (f) a plurality of pumps arranged in parallel; (g) a circuit comprising a sump, pump and motor. The following examples have been considered to be significant inclusion of a pump, and if so claimed would preclude classification in Class 91 and cause classification in Class 60, if otherwise appropriate: (a) a pump which is characterized as to type, e.g., centrifugal, eduction, constant displacement, variable displacement, pulsator, etc., (however, see (b) in the preceding paragraph); (b) a motor driven pump in which the motor is characterized as to type, e.g., turbine, electric motor, internal combustion engine, etc. (however, see (e) in the preceding paragraph); (c) a pump which has any detail thereof recited as, for example, a "piston"; (d) a plurality of pumps in series; (e) a particular physical relation between a nominal pump, and (1) a motor supplied thereby, or (2) with a sump, reservoir or tank forming part of the circuit supplying the pump. For example, this particular physical relation may include their relation in space or mechanical interconnection means. See particularly Class 60 subclasses 325-494. (2) Accumulators. A motor having an expansible chamber in constant communication with an accumulator for pressurized motive fluid is not precluded from Class 91 regardless of the specificity with which the accumulator is recited, the accumulator in this case being considered to be merely a part of the expansible chamber. Class 60 takes an accumulator combined with a Class 91 motor in which a control valve means is interposed between the accumulator and expansible chamber unless the accumulator is claimed so broadly as to amount to a mere conduit. See particularly Class 60, subclasses 325-494. (3) Internal Generation. Class 60 takes those expansible chamber motors in which the motive fluid within an expansible chamber is heated or cooled, as, for example, by a fluid in heat exchange relation with the interior of the chamber. Such a fluid may be the same motive fluid used in the chamber either before or after it passes through the chamber. See Class 60, subclass 508. (4) Heating, Superheating or External Generation. An expansible chamber motor having nominally claimed means to heat or superheat the motive fluid before introduction into the expansible chamber is not precluded from Class 91. For example, Class 91 takes a "boiler" combined with an expansible chamber motor while a "fire tube boiler" combined with a Class 91 motor would be classified in Class 60. See, for example, Class 60, subclasses 643-684. Class 91 does not take the combination of an expansible chamber motor with an explosive generation of motive fluid even if nominally claimed. See, for example, Class 60, subclasses 632-638. (5) Exhaust Treatment or Handling. Class 60 takes combinations involving treatment of motive fluid after it leaves an expansible chamber where means is claimed to change some characteristic of the fluid. A condenser is an example of such a means, but the inclusion of a condenser in a claim by name only is not sufficient to preclude a patent from Class 91. Class 60 also takes combinations involving handling of exhaust fluid from a fluid motor. This fluid is considered to be exhaust fluid for Class 60 after it leaves the last claimed valve means which could affect operation of the Class 91 motor. Handling is considered to necessarily include more than a mere pipe or chamber to conduct the exhaust fluid away. A valve for controlling a Class 91 motor, located in the exhaust line from the motor, designed to direct exhaust fluid to one or more of a number of exhaust passages is not exhaust fluid handling for Class 60. However, an exhaust fluid conductor having a number of ports therein merely for the purpose of dividing the exhaust stream is more than a mere chamber or pipe and is classified in Class 60. Claimed limitations to an elbow, support or other fitting which constitutes a mere part of the exhaust pipe will be ignored, but any significant relation of the pipe and motor will result in classification in the appropriate exhaust treatment subclass of Class 60. A particular physical relation or mechanical interconnection between a chamber or reservoir for receiving exhaust fluid from the motor and the motor has been considered exhaust handling for Class 60. C. Pulsators Class 60 takes pulsator systems in which a generally constant mass of confined motive fluid passes between pump and motor expansible chambers and returns to the pump by the same route or conduit. Class 60 also provides for such pulsator systems where additional fluid is added to the system whether the fluid is make-up fluid to replace leakage or pressurized motive fluid to operate the motor, unless the pressurized motive fluid is valved by a movable valve element which is mechanically connected to the pump working member so that movement of the working member will cause movement of the valve element. The latter combination is classified in Class 91. See the Search Class 60 note in subclass 6 of Class 91 for a further statement of this line. It is to be noted that some pulsator systems which involve a generally constant mass of confined motive fluid include a valve such as a throttle between the pump and motor. The claiming of the motor and valve only in such a disclosed system is excluded from Class 91 in that the fluid does not exhaust to some place other than whence it came. Search Class 60 subclasses 533-594 for pulsators and pulsator systems. RELATIONSHIP TO CLASS 418 Class 418, Rotary Expansible Chamber Devices, takes rotary expansible chamber motors even though the disclosure and claims may be restricted to motor use. In some ways Class 418 may be considered to be less comprehensive than Class 91, and rotary expansible chamber type motors in certain combinations enumerated below will be classified in Class 91 rather than Class 418. Unless specifically excluded below a patent to a rotary expansible chamber type motor as defined in the class definition of Class 418 will be classified as an original in Class 418 as opposed to Class 91. (1) Valving (a) Cyclic or Position Responsive: Class 418 will take rotary expansible motors combined with valves for the motive fluid which have a repetitive pattern or cycle of operation which is related to the rotation of the motor. These may be termed cyclic or position responsive valving and include the opening and closing of inlet or exhaust ports by the movement of this type valving so as to provide, for example, early cutoff of supply is also included in Class 418. The inclusion, however, of means to cutoff operation of the motor after a partial, full or predetermined number revolutions is excluded from Class 418 and would cause classification in this class (91). See for example, subclass 2. (b) In-line: An in-line valve is defined as one situated in the normal line of motive fluid flow which acts in some way to control the flow in the line, but not by diverting the fluid to a second or subsidiary flow line, e.g., waste, etc. Class 418 will take all in-line valves combined with a rotary expansible chamber motor which are controlled by some means other than a condition of the motive fluid, e.g., manual throttle, etc., and will also take those which are actuated directly by the application of the motive fluid thereto, i.e., direct response valves. Those devices including in-line valves which are controlled by a motive fluid condition, e.g., pressure, flow, etc., and in which said valves are not of the direct response type are excluded from Class 418 and will be classified in Class 91 if otherwise appropriate. (c) Branched Flow or By-pass: (1) Separate Valve Means: Those rotary expansible chamber devices which include a separate valve means (as opposed to a movable chamber part as discussed in paragraph (2) immediately below) to divert or by-pass all or a portion of the motive fluid from its normal or first course of flow to a second or waste path are excluded from Class 418 regardless of whether the valve is manually or otherwise controlled unless the diverted fluid is used merely for a motor perfecting function such as lubricating, cooling, vane bias, etc. (2) Movable Chamber Part: Many rotary expansible chamber motors have expansible chamber parts which are in running contact with other chamber parts and which move from a "normal" or contacting position to a noncontacting position and in so moving allow passage or by-pass of motive fluid thereby. Examples of such parts are vanes, abutments, end plates, etc., and such parts are usually biased into contacting position by means such as a spring, pressure fluid conducted from the expansible chamber or the like. Such devices are not excluded from Class 418 even though the yielding of the part may be considered to be performing a by-pass function. However, if motive fluid is conducted to the part for such a biasing function, e.g., behind end plate, etc., and there is a controlled application of fluid to or release of the fluid from the bias area for the disclosed purpose of by-passing said fluid or conducting it to another point of disposal such devices are excluded from Class 418 and are classified in Class 91 if otherwise appropriate. (3) With Diverse Motor: The combination of a rotary expansible chamber motor with another motor of a different type, e.g., reciprocating, etc., is excluded from Class 418. Unless the diverse motor is a mere auxiliary of the rotary expansible chamber motor, as for example, a valve actuating motor. See Class 91, subclass 61 for a combined rotary expansible chamber motor and a reciprocating motor. See Class 60, Power Plants, subclasses 698-720, for other diverse motors one of which may be of the rotary expansible chamber type. The Search Class notes below also include statements of the line with other classes. |
SECTION III - REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
| 60, | Power Plants, see (4) Note above for the relationship of Class 91 and Class 60. |
| 73, | Measuring and Testing, subclasses 232 through 271for expansible chamber type volume or rate of flow meters. Class 73 includes expansible chamber meters combined with registering mechanism and meters incapable of general use as an expansible chamber motor. A meter is considered to be incapable of such general use if there is not disclosed means to take power therefrom for external use such as to a registering mechanism. Therefore, Class 91 takes an expansible chamber device disclosed as a meter having means to take power therefrom such as for an unclaimed registering mechanism. |
| 74, | Machine Element or Mechanism, appropriate subclasses for machine elements and mechanisms, per se, and in combination with a nominally claimed expansible chamber motor. In general gearing or linkage included as part of the power output means from an expansible chamber motor is considered to be basic subject matter of the motor and would not preclude classification in Class 91. Also see (2) Note, in subclass 55 of Class 91. For statement of the line between Class 74 and Class 92, see section III of the class definition Class 92. |
| 92, | Expansible Chamber Devices, see (3) Note above for the relationship of Class 91 and Class 92. |
| 123, | Internal-Combustion Engines, The line between Class 91 and Class 123 is one of disclosure. Thus, any patent which has at least one embodiment of the invention which is disclosed as an internal combustion engine, and which has a claim specific to such embodiment, and in which the claim includes control of the motive fluid, is classified in Class 123 even though the motive fluid control is not necessarily limited to internal combustion operation. |
| 137, | Fluid Handling, subclasses 82 through 86,for pressure modulating relays or followers for expansible chamber motors. The positive inclusion in a claim of the expansible chamber motor which is controlled by the pressure modulating relay or follower precludes classification in Class 137 and causes classification in Class 91. See, for example, subclasses 3, 47-51 and 52 of Class 91. See subclasses 87.01-87.06, 455-543.23 and 561-616.7 for self proportioning or correlating systems, line condition change responsive valves and multiple or multi-way valves for expansible chamber motors, respectively. The positive inclusion in a claim of the motor which is being controlled by the valve means precludes classification in Class 137. The inclusion in a claim of a cylinder in combination with a valve will not exclude a patent from Class 137 on the basis that a cylinder is the equivalent of a flow path being controlled by the valve. However, where a cylinder is claimed as having passages leading to or ports present in opposite ends thereof (as in a double acting motor) the patent is excluded from Class 137. Also see (2) Note in section I above. |
| 172, | Earth Working, appropriate subclasses, and especially subclasses 2 through 12,464-466 and 491 for expansible chamber motor operated or adjusted implements and see the reference to Class 91 in the Search Class section of Class 172 for a statement of the line. |
| 173, | Tool Driving or Impacting, appropriate subclasses for an expansible chamber fluid motor in a claimed combination peculiar to tool driving, such as a tool drive means combined with a tool impacting, work cleaning, tool advancing or manipulating handle feature. See the class definition of Class 173 for a complete description of the subject matter provided for therein. Also see the reference to Class 91 in section IV of the class definition of Class 173. |
| 180, | Motor Vehicles, subclasses 53.1 through 53.8for vehicles with power take-off means from the vehicle motor to a nominally claimed load. |
| 187, | Elevator, Industrial Lift Truck or Stationary Lift for Vehicle, especially subclass 215 for an expansible chamber fluid motor and its control in claimed combination with a more than named stationary lift for raising a vehicle in its entirety between spaced vertical positions, and subclasses 272-275 for an expansible chamber fluid motor and its control in claimed combination with a more than named load-underlying support surface, e.g., external load support guide structure which is not necessary to the fluid motor internal drive, particular load-underlying support structure, elevator counterbalances, etc. |
| 251, | Valves and Valve Actuation, appropriate subclasses for valves and valve actuators for expansible chamber motors. The positive inclusion in a claim of the motor which is being controlled by the valve precludes classification in Class 251. The inclusion in a claim of a cylinder in combination with a valve will not exclude a patent from Class 251 on the basis that a cylinder is the equivalent of a flow path being controlled by the valve. Also see (2) Note in section I above. |
| 415, | Rotary Kinetic Fluid Motors or Pumps, appropriate subclasses for a rotary motor operated by a confined or directed fluid but not inclusive of "expansible chamber" type classifiable in Class 418, Rotary Expansible Chamber Devices. |
| 417, | Pumps, appropriate subclasses for expansible chamber pumps. Many expansible chamber devices, are capable of use either as a pump or a motor without modification, the only difference being whether pressure fluid is introduced, and mechanical power produced (motor) or mechanical power is introduced and pressure fluid produced (pump). The following criteria will determine original classification if a patent: (a) Where the disclosure is that the device can be used as a pump or motor, classification in Class 91, will result if the device is claimed as a motor or alternatively as pump or motor, or generically as an expansible chamber device, for example. If such a device is claimed as a pump classification will be in Class 417. (b) Where the device is solely disclosed as a pump, classification in Class 417 will result whether claimed generically or specifically. (c) Where the device is solely disclosed as a motor, classification in Class 91 will result whether claimed generically or specifically. (d) Where the device is disclosed and claimed generically, classification in Class 91 will result. (e) For an exception to this general line see subclasses 269 through 273of Class 417 and (1) Note in subclass 269 for the line between the art classified thereunder and the art in Class 91, subclasses 472-507. |
| 475, | Planetary Gear Transmission Systems or Components, for planetary gear transmissions, per se. The same line exists between Class 91 and Class 475 as exists between Class 91 and Class 74. |
| 477, | Interrelated Power Delivery Controls, Including Engine Control, for interrelated control between an engine and a transmission, clutch, or brake. Class 477 was formed from patents in Classes 74 and 192 and so the same line exists between Classes 91 and 477 as exists between Class 91 and Classes 74 and 192. subclasses 375+ for expansible chamber motor driven pumps. The claiming of the pump by name only is not sufficient to exclude a patent from Class 91, the pump or piston and cylinder being considered a nominal load or the equivalent of a crosshead and guide for the motor. |
SECTION IV - GLOSSARY
See (3) Note of subclass 418 of Class 91 for definitions of terms applicable to subclasses 418-470 only.
CYLINDER
A rigid external member which permanently surrounds the piston, the latter constituting a relatively moving wall for the expansible chamber, the other walls of which are formed by the cylinder, and the cylinder ordinarily including the abutment or reaction surface against which the motive fluid acts or the piston forming the abutment for the cylinder when the cylinder is movable and the piston fixed. However, the abutment or reaction surface for the piston need not necessarily be formed by the cylinder, but may be formed by a second relatively movable opposed piston within the cylinder. If the piston withdraws from the cylinder merely to control the motive fluid, the piston is still considered to be permanently surrounded by the cylinder.
DISTRIBUTOR
Means which comprises or includes a part which is movable relative to the working member of a cyclically operable motor to control a motive fluid port or passage in such a manner as to cyclically control inlet and/or exhaust flow of motive fluid to or from the motor. The distributor need not entirely cut off the motive fluid flow, but may cyclically control the amount of flow (i.e., throttling).
MOTIVE FLUID
The fluid (expansible or inexpansible) which is introduced into or withdrawn from a working chamber of the motor to cause the working member to move. The term "motive fluid" applies to the fluid from the point of origin to the point of disposal. Fluid which is withdrawn from the motive fluid supply to perform some other motor function, such as motor valve operation, is still considered to be motive fluid even though said fluid never enters the working chamber of the motor. Atmospheric air which acts upon the working member of a vacuum motor is not considered to be motive fluid unless the atmospheric air is controlled in some manner, as by valving. In a vacuum motor the fluid which is evacuated from the working chamber is considered to be exhaust motive fluid and the atmospheric air, if controlled, is considered to be inlet motive fluid.
NON-WORKING CHAMBER
A chamber of the motor which expands and contracts incident to movement of the working member, and which is neither expanded nor contracted to do work by fluid supplied to or evacuated from said chamber.
WORKING CHAMBER
A chamber into which motive fluid is introduced or from which motive fluid is withdrawn (vacuum) to cause the working member to move to perform work, the chamber expanding or contracting incident to the movement of the working member. A chamber of a vacuum motor to which atmospheric air has free ingress and egress without any control thereof is not a working chamber. However, a chamber of a vacuum motor in which atmospheric air acts and some control is exercised over the atmospheric air is a working chamber.
WORKING MEMBER
A movable wall of the expansible chamber to which motive fluid is applied or to which atmospheric air is applied in the case of vacuum motor, said wall moving as a result of the application of the motive fluid and in so moving doing work for utilization by means other than the motor or some part thereof. In a reciprocating motor this term is generic to both a moving piston and a moving cylinder. The working member is considered to include the movable wall to which motive fluid is applied as well as all parts which are rigid therewith, e.g., piston rod, etc. However, a pair of separate movable walls disposed in separate working chambers (i.e., chambers which are not in fluid communication during at least some part of the operation of the motor), even though rigidly connected together, are considered to be plural working members if the application of motive fluid thereto urges both walls in the same direction. A working member has a single working surface which surface may have two or more relatively movable faces so long as adjacent faces are always an extension of each other, e.g., flexible diaphragm or bellows, etc.
SUBCLASSES
![[List of Patents for class 91 subclass 1]](../ps.gif) 1 | WITH SIGNAL, INDICATOR OR INSPECTION MEANS: | ||||||||
This subclass is indented under the class definition. Apparatus having (1) signals, indicators, registers, recorders,
or gauges for indicating a condition or the position of a motor
part such as a piston, control member, valve, etc., such devices
consisting of relatively movable, changeable or audible information
giving parts, or (2) transparent viewing means whereby the motor
operation or the condition of some part thereof may be observed.
SEE OR SEARCH CLASS:
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| 2 | CUTOFF OR CONTROL AFTER PREDETERMINED NUMBER OF CYCLES OR REVOLUTIONS: | ||||||
This subclass is indented under the class definition. Apparatus in which the motor has a working member which
operates through a given cycle, i.e., from a given position through a
revolution or reciprocation back to the starting position so as
to be in condition to repeat the cycle, and having means for stopping
or modifying the operation of the motor responsive to working member
travel through a definite preselected number of cycles greater than one.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 3 | JET CONTROL TYPE: | ||
| This subclass is indented under the class definition. Apparatus including means for providing a jet stream of
motive fluid and a receiving orifice to receive all or a portion
of the jet stream, motive fluid being conducted from the orifice
to a working chamber of the motor to cause operation thereof, movement
of the motor being controlled by varying the proportion of the jet
stream which enters the orifice.
SEE OR SEARCH CLASS:
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| 4 | HYDRO-PNEUMATIC: | ||||||
This subclass is indented under the class definition. Apparatus in which the motor is provided with a quantity
of trapped liquid which is applicable to the working member to move
same, means to apply pneumatic pressure directly to said trapped
liquid to actuate said working member and valve means for controlling
the pneumatic fluid.
SEE OR SEARCH CLASS:
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| 5 | WORKING MEMBER MOVED BY STORED MOTIVE FLUID CHARGE: | ||||||
This subclass is indented under the class definition. Apparatus in which the working member of the motor is operated
by a charge of expansible motive fluid which has been completely isolated
in a storage chamber separate from the expansible chamber; i.e.,
the storage chamber at a given time is cut off from both the source of
supply and the expansible chamber.
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| 6 | FLUID SUPPLY THROUGH DIVERSE PATHS TO SINGLE EXPANSIBLE CHAMBER: | ||||||||||||||||
This subclass is indented under the class definition. Apparatus in which a working chamber of the motor is provided
with inlet motive fluid which is supplied from different sources
at different times or flows through supply paths that are different
at the will of the operator or under different operating conditions
so as to supply force to act on the same face of the working member
at different times.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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| 6.5 | Three or more cylinders arranged in parallel, radial or conical relationship with rotary transmission axis: | ||||
This subclass is indented under subclass 6. Apparatus comprising three or more cylinders each cylinder
being provided with relatively reciprocating piston (includes diaphragm)
to thereby form a plurality of working chambers, the cylinders or
a transmission element in common operative engagement with said
cylinders or pistons being adapted to rotate about a fixed axis;
said cylinders being physically arranged in a manner such that their
longitudinal axis either (1) intersect at a common point or (2) extend
parallel to said axis of rotation, and in which motive fluid is
supplied to at least one of said cylinders through diverse flow
paths.
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| 7 | Selective cyclic and noncyclic operation or parking: | ||||
This subclass is indented under subclass 6. Apparatus in which the motor is capable of reciprocatory
motion through a cycle by a forward stroke and a return stroke to
the starting point and wherein the motor (1) may be operated continuously
repeating said cycle without manual intervention with motive fluid
being supplied to a working chamber thereof through one supply path
or (2) may at the will of the operator, be operated through a full
or partial forward or return stroke utilizing a different motive
fluid supply path to said working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 8 | Semi-compound type: | ||
| This subclass is indented under subclass 6. Apparatus wherein the motor is provided with at least two
expansible working chambers, a prior one of the chambers receiving
expansible motive fluid and having a passage for exhausting the
fluid into a subsequent chamber for expansion therein; and wherein
a further fluid passage is provided which may be used to additionally
supply motive fluid to the subsequent chamber simultaneously with
the exhaust fluid from the prior chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 9 | Changeable by shiftable distributor: |
| This subclass is indented under subclass 8. Apparatus having a valve for distributing motive fluid to and between the working chambers and wherein a movement of the valve from the normal limits of travel during multiple expansion operation opens an additional fluid passage allowing motive fluid to be introduced directly into the subsequent chamber. | |
| 10 | With condition responsive change-over valve: | ||
| This subclass is indented under subclass 8. Apparatus having a valve means for changing the motor to
or from the semicompound type, the valve means responding to some
condition of operation of the motor or the motive fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 11 | Changeable from multiple expansion to simple operation: | ||||
This subclass is indented under subclass 6. Apparatus comprising two or more expansible working chambers
having, in one condition of operation, interconnecting passages
whereby a prior one of the chambers receives motive fluid and then
exhausts the motive fluid into the subsequent chamber for expansion
therein; and wherein additional passage means is provided, in another
condition of operation, for introducing motive fluid from the source
to the subsequent chamber, the subsequent chamber then receiving
no fluid from the first chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 12 | Cyclically operable motor with port reversing: | ||||||
This subclass is indented under subclass 6. Apparatus comprising a cyclically operable motor and motive
fluid distributing valve means operated incident to the operation
of the motor for causing the cyclic operation and means for reversing
the motive fluid flow to and from the motor for a given position
of the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 13 | By Shifting distriburtor seat: | ||
| This subclass is indented under subclass 12. Apparatus in which fluid connections to the motor for a
given position of the motor are reversed by adjusting the distributor
seat, i.e., the part of the distributor which is fixed during normal
cyclic operation of the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 14 | By shifting distributor: | ||||
| This subclass is indented under subclass 12. Apparatus comprising separately actuatable means to additionally
operate the distributor of the motor so as to reverse the fluid
connections to the motor for a given position of the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 15 | Selector valve between distributor and motor: | ||
| This subclass is indented under subclass 12. Apparatus comprising further valve means arranged in series
with the distributing valve means and operable to reverse the fluid
connections between the distributing valve means and the motor for
a given position of the distributing valve means, the further valve
means being located between the distributing valve means and the
motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 16 | Drifting or coasting on lower pressure: | ||||||||
This subclass is indented under subclass 6. Apparatus in which the working chamber is supplied with
relatively high pressure fluid to drive the working member and is
supplied with a relatively lower pressure fluid when the high pressure
fluid is cut off and the motor is coasting, i.e., being driven by
the load, to prevent vacuum build-up in the working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 17 | With speed responsive cutoff of drifting fluid: | ||
This subclass is indented under subclass 16. Apparatus in which the lower pressure fluid is cut off from
the motor in response to the speed of operation of the motor falling
below a given amount.
| |||
| 18 | Pressure control of drifting fluid: | ||||
| This subclass is indented under subclass 16. Apparatus in which the lower pressure fluid is controlled
by the pressure condition in the higher pressure line or in a motor
working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 19 | Diverse paths used to control extent of working member travel: | ||
| This subclass is indented under subclass 6. Apparatus in which the supply of motive fluid to a working
chamber of the motor through one path is effective to cause the
working member to move to a given position or within a given limited
range and then stop and the supply to said working chamber through
a second path is effective to move the working member to a different
position or through a different limited range and then stop.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 20 | Position responsive: | ||
| This subclass is indented under subclass 6. Apparatus in which at least one of the flow paths of the
motive fluid supply is controlled as a result of the motor working
member or load attaining a given position or is incapable of being
controlled until the working member or load has attained a given
position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 21 | Rotating working member or chamber: | ||
This subclass is indented under subclass 20. Apparatus comprising a rotating working member or chamber.
| |||
| 22 | Preliminary inlet to contracting chamber (e.g., cushioning, etc.): |
| This subclass is indented under subclass 20. Apparatus in which the motor is of the reciprocating type wherein when the motor working member is moving in one direction and approaching the end of the stroke an initial charge of motive fluid is admitted to the contracting chamber in response to the working member attaining a given position, usually to cushion the movement of the working member, and then an additional charge of motive fluid is supplied through a different supply path to cause the working member to move in the opposite direction on the return stroke. | |
| 23 | By bypassing from expanding chamber (399): | ||
| This subclass is indented under subclass 22. Apparatus in which the motor is of the double acting type,
the initial charge of motive fluid being supplied to the contracting
chamber from the expanding chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 24 | Additional inlet path opened in response to position: |
| This subclass is indented under subclass 20. Apparatus in which a working chamber is supplied with motive fluid through a first supply path and in response to the working member attaining a given position further motive fluid is supplied to said chamber through a second path with the first path remaining open. | |
| 25 | Working member or part carried thereby uncovers inlet port: | ||
| This subclass is indented under subclass 24. Apparatus in which the second supply path includes a supply
port in the working chamber which is closed by the working member
or a relatively movable part carried on the working member, the
working member or said relatively movable part acting to open said
supply port in response to movement of the working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 26 | First path has check valve or selectively adjustable throttle: |
| This subclass is indented under subclass 25. Apparatus in which said first supply path is provided with (1) a self acting valve which opens in response to motive fluid flow to permit substantially unrestricted flow into the working chamber, but is self closing to prevent exhaust flow from the working chamber, or (2) a valve which may be manually operated to vary the flow capacity of said first supply path. | |
| 27 | Plural simultaneous paths, one cutoff in response to position: |
| This subclass is indented under subclass 20. Apparatus in which motive fluid is concurrently supplied to a working chamber through a plurality of flow paths, one of said paths being closed in response to the working member attaining a given position while the other supply path remains open. | |
| 28 | Second path activated in response to pressure or flow in first path: | ||||||||
This subclass is indented under subclass 6. Apparatus in which motive fluid is supplied to the working
chamber through one path and in response to a flow or pressure condition
in said flow path a second inlet flow path to said working chamber
is opened.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 29 | By pressure rise in first path: |
| This subclass is indented under subclass 28. Apparatus in which the second inlet flow path to the working chamber is opened in response to an increase in pressure of the motive fluid in the first inlet flow path. | |
| 30 | Serially arranged reversing valves: | ||
| This subclass is indented under subclass 6. Apparatus comprising a double acting reciprocating motor
having opposed working chambers, motive fluid inlet and exhaust
lines and a pair of valves serially arranged between the inlet and
exhaust lines on the one hand and the opposed working chambers on
the other hand, each of said valves being controllable to connect
the motive fluid inlet to one of said chambers while the other chamber
is connected to exhaust or vice versa.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 31 | One path includes restriction: |
| This subclass is indented under subclass 6. Apparatus in which one of the flow paths to the working chamber has throttling means therein to restrict the flow of motive fluid to the working chamber. | |
| 32 | Activation of one path disables second path: | ||
This subclass is indented under subclass 6. Apparatus wherein when motive fluid is supplied to a working
chamber through one supply path another motive fluid supply path
to said chamber is inactivated and does not supply motive fluid
to the chamber when said one supply path is active.
| |||
| 33 | Pressure operated: | ||
| This subclass is indented under subclass 32. Apparatus in which motive fluid from said one supply path
acts on valve means in the second supply path to cut off said second
path to the working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 34 | SINGLE ACTING, CHANGEABLE TO OR FROM DOUBLE ACTING: |
| This subclass is indented under the class definition. Apparatus in which a motor having a reciprocating working member is provided with means by which the reciprocating member is moved through a complete cycle by application of motive fluid alternately to opposed working faces thereof and alternately is moved through a complete cycle with motive fluid being applied to only one working face thereof during a portion of the cycle. | |
| 35 | INDEPENDENTLY OPERATED TIMER, DELAY, PATTERN OR CYCLIC CONTROL: | ||||||||||||||
This subclass is indented under the class definition. Apparatus including means separate from the motor to (1)
cause or permit the motor to operate or not to operate for a period
of time and then act to start, stop or change the mode of operation
of the motor; or (2) cause the motor to operate through a given
reciprocating cycle of operation repetitiously; the operation of
said means being independent of and not controlled by the operation
of the motor or a pressure or flow condition of the motive fluid supplied
to or exhausted from the motor and not requiring the intervention
of a human operator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||
| 36 | Of independently movable working members: |
| This subclass is indented under subclass 35. Apparatus including a plurality of working members, each being capable of movement independent of the other, and each being provided with independently operable timing, delay, pattern or cyclic control. | |
| 37 | Pattern or template control: | ||||
This subclass is indented under subclass 35. Apparatus in which there is provided an information carrying
device such as a perforated tape, cam or the like, said device being
driven or moved independently relative to and not controlled by
the motor and means operated by said device for causing the motor
to operate in accordance with the information carried thereby.
SEE OR SEARCH CLASS:
| |||||
| 38 | Fluid actuated valve with volume chamber delay means: |
| This subclass is indented under subclass 35. Apparatus in which there is a fluid actuated valve which is operated after a predetermined time or delay to control the motor, the timing or delay means comprising a chamber of predetermined volume to which the valve actuating fluid flows at a limited rate and which must be filled by said fluid before the fluid actuates said valve to control the motor. | |
| 39 | Independent distributor actuation for cyclic control: | ||||||||
This subclass is indented under subclass 35. Apparatus in which the motor has a cycle of operation in
which the working member moves in one direction, reverses its direction
of movement and returns to the original position, so as to be in
condition to repeat the operation, and in which a distributor is
provided to control the flow of motive fluid to cause the motor
to operate through said cycle, said distributor being driven independently
of said motor and not in consequence of motion or operation of the motor
to cause the motor to operate continuously repeating said cycle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 40 | Fluid actuated distributor motor: | ||||
This subclass is indented under subclass 39. Apparatus in which the distributor is driven by a fluid
motor other than and not controlled by the motor which is controlled
by the distributor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 41 | WITH CORRELATED CONTROL OF MOTIVE FLUID AND LOCKING MEANS: | ||||||||||
This subclass is indented under the class definition. Apparatus which includes releasable means for holding a
working member against movement, in at least one direction, and
in which means for controlling said holding means to provide holding
and/or release of the working member is so related to means
for controlling the flow of motive to or from the motor that operation
of the means for controlling the flow of motive fluid to produce
starting or stopping of the working member will result in operation
of the holding means to produce holding or release of the working
member, or, operation of the means for controlling the holding means
to produce holding or release of the working member will result
in operation of the fluid flow control means to produce starting
or stopping of fluid flow to or from the motor.
SEE OR SEARCH CLASS:
| |||||||||||
| 42 | By electrical control means: |
| This subclass is indented under subclass 41. Apparatus in which the control means for the motive fluid and the control means for the holding means are interconnected by electrical circuit means in such a way as to provide the correlated operation of the two control means. | |
| 43 | Working member position control of motive fluid and locking means: |
| This subclass is indented under subclass 41. Apparatus in which the means for controlling the flow of motive fluid and the working member holding means are operated in response to the motor working member, or the load driven by the working member, attaining a given position. | |
| 44 | Sequential operation of locking means and motive fluid control: |
| This subclass is indented under subclass 41. Apparatus in which the control means for the motive fluid and for the locking means are so related that either the locking means or the motive fluid control means is necessarily operated prior to operation of the other. | |
| 45 | Common or interconnected valve means control motive fluid and fluid for locking means: | ||
This subclass is indented under subclass 41. Apparatus in which holding and/or release of the
working member is accomplished by control of flow of a nonworking
fluid or by control of fluid flow to a fluid actuated holding means, and
in which the flow of actuating fluid for the holding means, or the
flow of nonworking fluid is controlled by the same valve, or by
a valve which is mechanically interconnected with a valve, which
controls the flow of motive fluid.
| |||
| 46 | WITH INTERRELATED CONTROL OF MOTIVE FLUID AND LUBRICANT: | ||||
This subclass is indented under the class definition. Apparatus including a means provided for the function of
supplying lubricant to relatively moving parts of the motor, e.g.,
piston, transmission elements, etc., said lubricating means requiring
the actuation of a movable motive fluid control or distribution
means.
SEE OR SEARCH CLASS:
| |||||
| 47 | CONSTANTLY APPLIED MOTIVE FLUID WITH CONTROLLED VENTING: | ||||||||
This subclass is indented under the class definition. Apparatus in which a motor working chamber and working member
are in continuous communication with a supply of motive fluid under
all conditions of operation of the motor, the movement of the motor
working member being controlled by the operation of the motor, the
movement of the motor working member being controlled by the operation
of an outlet to selectively or adjustably connect said working chamber
to a region of continually lower pressure to allow escape of motive
fluid, the pressure in said region being constant, e.g., atmospheric,
etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 48 | Plural separately controlled vents: |
| This subclass is indented under subclass 47. Apparatus in which the working chamber is provided with a plurality of outlets or vent passages there being control means for each of the vent passages which act independently or at different times or under different conditions. | |
| 49 | Fluid vented through working member: | ||||||||
| This subclass is indented under subclass 47. Apparatus in which the working member is provided with a
passage therein and the outlet or vented fluid passes therethrough.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 50 | Cyclically operable: | ||
| This subclass is indented under subclass 47. Apparatus in which the motor is of the cyclically operable
type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 51 | Motive fluid constantly applied to and vented from opposed chambers: |
| This subclass is indented under subclass 47. Apparatus in which the motor is provided with opposed working chambers and a working member having opposed working faces, the motive fluid being continuously supplied to said opposed chambers and opposed working member faces the working member being movable in opposite direction by alternately venting said working chambers. | |
| 52 | CONSTANTLY OPEN THROTTLED EXHAUST WITH CONTROLLED MOTIVE FLUID SUPPLY: | ||||||||
This subclass is indented under the class definition. Apparatus in which a motor working chamber and working member
are in continuous communication with a low pressure region by means
of a restricted outlet under all conditions of operation of the
motor, the movement of the motor working member being controlled by
the operation of means to selectively or adjustably connect the
working chamber to a source of motive fluid supply.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 53 | ENGINE ROTATING OR STARTING TYPE: | ||||||||||||
This subclass is indented under the class definition. Apparatus for turning or starting the rotary shaft of an
engine and having a clutch or gearing connection with the engine
which is disengaged from or which permits the engine shaft to rotate
while the starting motor is inoperative.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
| 54 | CONVERTIBLE; OR CHANGEABLE BY DISASSEMBLY OR ASSEMBLY: | ||||||||||||||
This subclass is indented under the class definition. Apparatus, (1) adapted to be rearranged to perform different
functions; or (2) adapted to be altered so as to operate in a different
way or change its function or enhance its operation in some way
by (a) disassembling the apparatus in some portion and then reassembling
the apparatus with the same or different portion, (b) disassembling
some portion from the apparatus, or (c) assembling some portion
of the apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
| 55 | COMBINED: | ||||||||||
This subclass is indented under the class definition. Apparatus combined with means, which means if claimed, per
se, would be classified in another class and which is not merely
a part or subcombination of the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 59 | TORQUE RESPONSIVE MOTIVE FLUID CONTROL: | ||||||||
| This subclass is indented under the class definition. Apparatus in which a variation of rotational load imposed
upon the rotating shaft of the motor controls the flow of motive
fluid to or from the motor.
SEE OR SEARCH CLASS:
| |||||||||
| 61 | ROTARY AND RECIPROCATING WORKING MEMBERS: | ||||
| This subclass is indented under the class definition. Apparatus in which there is provided a plurality of working
chambers, each having a working member moving therein, at least
one other working member having to-and-fro motion whereby the working
members expand and contract the respective working chambers.
SEE OR SEARCH CLASS:
| |||||
| 151 | SERIALLY FORMED EXPANDING WORKING CHAMBERS (E.G., ENDLESS, ETC.): | ||||||
This subclass is indented under the class definition. Apparatus in which one or more working members act to form
a progression of completely isolated expanding working chambers by
a unidirectional movement.
SEE OR SEARCH CLASS:
| |||||||
| 152 | MULTIPLE EXPANSION: | ||||||||
This subclass is indented under the class definition. Apparatus utilizing an expansible motive fluid and having
a plurality of working chambers at least one of which receives its
motive fluid in whole or in part from another of the working chambers
for expansion or further expansion of the motive fluid therein to
perform work.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
| 153 | Duplex: | ||
| This subclass is indented under subclass 152. Apparatus comprising a motive fluid distributing valve for
each of the working chambers, the fluid distributing valve of one
working chamber being operated by the working member of another
working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 154 | Cut-off or reversing: |
| This subclass is indented under subclass 153. Apparatus comprising means for adjusting one or more of the fluid distributing valves for affecting the period of admission of motive fluid to the working chamber or for varying fluid flow to the working chambers so that the direction of movement of the power transmitting means is reversed. | |
| 155 | With fluid actuated distributor: | ||
| This subclass is indented under subclass 152. Apparatus wherein at least one of the working chambers has
a motive fluid distributing valve which is actuated in whole or
in part by variations in pressure of a fluid applied to the valve or
valve actuator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 156 | Concentric working chambers: |
| This subclass is indented under subclass 152. Apparatus wherein one of the working chambers surrounds another working chamber, said chambers having a common axis. | |
| 157 | Relative valving adjustment between high and low pressure working chambers: |
| This subclass is indented under subclass 152. Apparatus in which each of the working chambers is provided with valve means for distributing motive fluid thereto, and including means for selectively moving at least one of the valve means relative to the other, the movement being in addition to the normal fluid distributing movement. | |
| 158 | Adjustment for valving for plural chambers: |
| This subclass is indented under subclass 157. Apparatus wherein the valve means for a plurality of working chambers are selectively movable, each being movable independently of the other or being so interrelated that a movement of one results in a movement of the other. | |
| 159 | Expansion between relatively movable working members: |
| This subclass is indented under subclass 152. Apparatus comprising a plurality of working members which are movable relative to one another, the fluid acting on one of the working members and then being expanded to act on another working member. | |
| 160 | Double acting high and low pressure working members: |
| This subclass is indented under subclass 159. Apparatus in which the relatively movable working members each have opposed rigidly connected working faces to which motive fluid is alternately applied, exhaust fluid from the working faces of one of the working members being expanded to the working faces of another working member. | |
| 161 | Fluid acts on each working member in single direction: | ||
This subclass is indented under subclass 159. Apparatus wherein the working face or faces on each working
member are so disposed that the motive fluid reacts with each working member
in a single direction only.
| |||
| 162 | High and low pressure faces on each working member: |
| This subclass is indented under subclass 161. Apparatus wherein each working member has at least two integrally connected working faces disposed in the same direction, one of the faces receiving motive fluid from a high pressure source and another face simultaneously receiving motive fluid by cross expansion from another relatively movable working member. | |
| 163 | Fluid expanded through working member: |
| This subclass is indented under subclass 152. Apparatus having a high pressure chamber and a low pressure chamber, a working member in the high pressure chamber having a fluid passage therein, the motive fluid from the high pressure chamber being expanded through the passage into the low pressure chamber. | |
| 164 | Dual, rigidly connected high and low pressure faces: |
| This subclass is indented under subclass 152. Apparatus having at least two high pressure working chambers and at least two low pressure working chambers, a working member face in each of said working chambers, the working faces being integrally connected so as to move in unison and, on each stroke of the motor, motive fluid from a high pressure source acting in one of said high pressure chambers while fluid is simultaneously expanded from another of said high pressure chambers into one of the low pressure chambers. | |
| 165 | APPLICATION OF MOTIVE FLUID AT DIFFERENT PRESSURES TO OPPOSED WORKING MEMBER FACES: | ||||||||||
This subclass is indented under the class definition. Apparatus in which the motor is provided with opposed working
member faces, motive fluid being applied to said faces at the same
or different times, the motive fluid which is applied to one working
member face being above atmospheric pressure and the motive fluid
which is applied to the second face also being above atmospheric
pressure, but being at a different pressure than that applied to
the first face.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 166 | Double acting motor reversed by pressure variation of motive fluid: | ||
This subclass is indented under subclass 165. Apparatus in which the motor is of the double acting type
wherein valve means controls the flow of motive fluid to the opposed
working member faces in a manner such that the working member will
move in one direction when the pressure of the motive fluid being
supplied to operate the motor is at a first predetermined magnitude
and will move in the opposite direction when the motive fluid supply
pressure varies from said predetermined magnitude.
| |||
| 167 | EXTENSION OF UNIT HAVING SEPARATELY CONTROLLED WORKING CHAMBERS EQUALS SUM OF INDIVIDUAL CHAMBER EXTENSIONS: | ||||||||||
This subclass is indented under the class definition. Apparatus having plural working chambers with individually
actuated control means supplying motive fluid to each chamber, and
in which the chambers are physically connected in such fashion that
the output motion of one chamber can bodily shift another chamber
in the same general direction in which said other chamber is expansible
so that the individual output motions are cumulative and equal the sum
of the individual chamber extensions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
| 168 | Control of motive fluid for one working member in response to position of second: | ||
This subclass is indented under subclass 167. Apparatus in which the supply of motive fluid to one working
chamber is controlled in response to the working member in another working
chamber attaining a given position in its chamber.
| |||
| 169 | SINGLE CHAMBER FORMED BY MUTUALLY RELATIVELY MOVABLE CYLINDER, SLEEVE AND PISTON: | ||||||||||||||||
This subclass is indented under the class definition. Apparatus having a structural unit consisting of a single
working chamber whose surfaces include an external cylinder member,
and internal cylindrical sleeve member slidable therein and a third
member slidable in or on one of said members in such fashion that
each of the members is movable relative to the others.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
| 170 | RELATIVELY MOVABLE WORKING MEMBERS WITH ONE HAVING MOTIVE FLUID CONTROLLED BY, MOVABLY INTERCONNECTED WITH OR MOVED BY ANOTHER: | ||||||||||||||||||||||||
This subclass is indented under the class definition. Apparatus having plural working members which are capable
of relative movement and in which there is either (1) control of motive
fluid for one working member in response to the position of another;
(2) an interconnection between the members to cause relative motion
or (3) an interconnection between said members (such as a "lost
motion" or separable abutment connection) which causes
one member to move the other member under some disclosed operating
condition but which permits relative motion of the members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||
| 171 | Synchronizing in response to sensed difference in positions: | ||||||
This subclass is indented under subclass 170. Apparatus having separate means to control the working fluid
to two working members and additional means to sense the difference
in distances traveled by the working members from a starting point
and to affect the first means in a manner to decrease the difference
in said distances.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 172 | One working member oppositely biased by another: | ||
| This subclass is indented under subclass 170. Apparatus having a working member urged in one direction
by motive fluid acting thereon and urged in an opposing direction
by a second working member having motive fluid simultaneously supplied
thereto and which is movable relative thereto; e.g., by engagement
through separable abutment surfaces or by connection by a transmission
or linkage means or indirectly through a body of interposed fluid,
etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 173 | One working member forms movable chamber for another: | ||||
| This subclass is indented under subclass 170. Apparatus comprising a working chamber carried by and movable
with a first working member, and a second working member movable within
the working chamber carried by the first working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
| 174 | With connection to relatively movable output member disposed between spaced unitary end faces: | ||
| This subclass is indented under subclass 170. Apparatus in which at least one of the working members has
spaced integral opposed working faces or an additional working member
rigidly secured thereto, and engaging a relatively movable load
or transmission member at a point between the opposed faces or at
a point between the rigidly connected working members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 176 | Moving cylinders: | ||||||||||||
| This subclass is indented under subclass 170. Apparatus having either (1) movably mounted cylinders which
form relatively movable working members or (2) relatively movable
working members which are disposed in movably mounted cylinders.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||
| 177 | Oscillating working members: | ||||
| This subclass is indented under subclass 170. Apparatus in which at least two relatively movable working
members move back and forth about one or more axes to describe arcs
of not more than 360° .
SEE OR SEARCH CLASS:
| |||||
| 178 | Single valve unit controlling plural working chambers: |
| This subclass is indented under subclass 170. Apparatus comprising a unitary valve member which is within a single housing and movable relatively thereto to separately control separate passages communicating with different working chambers or with fluid operated valves controlling said chambers. | |
| 179 | Oscillating valve: | ||||
| This subclass is indented under subclass 178. Apparatus in which the valve member and housing are mounted
for relative rotary motion which is limited to not more than 360°.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 180 | Rotary valve: | ||||||||
| This subclass is indented under subclass 178. Apparatus having a means to impart a continuous relative
rotation of the valve member and housing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 181 | Interconnected working members in communicating chamber portions: | ||||
This subclass is indented under subclass 170. Apparatus having a plurality of working members disposed
in the same chamber and urged in opposite directions by the working
fluid in the chamber, the working members being connected to a force
transmitting means or mechanism which constrains them to move relative
to each other.
SEE OR SEARCH CLASS:
| |||||
| 182 | Means connecting working members actuates common part controlling motive fluid for the members: | ||
| This subclass is indented under subclass 170. Apparatus having a single member driven by the transmission
or the like which connects the plural working members for relative
motion, said member actuating separate control valves for the working
fluid supplied to each working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 183 | With means interconnecting working members to cause relative motion: | ||||||||
| This subclass is indented under subclass 170. Apparatus having a member, linkage, or transmission connected
to each of the working members and arranged to impart relative movement
to one working member when the other is moved or to constrain each
of the working members to move relatively in some predetermined
relation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
| 184 | Working member covers port to control motive fluid: |
| This subclass is indented under subclass 183. Apparatus in which the flow of motive fluid to or from a working chamber is interrupted by a surface of the working member overlapping an orifice in the working chamber wall. | |
| 185 | Motive fluid control by pitman swing or intermittent contact with working member: | ||||
This subclass is indented under subclass 183. Apparatus having valve means to control the motive fluid
flow to or from a working chamber, said valve means being actuated
by either (1) means connected to the valve means and disposed in
the path of a working member for intermittent contact therewith
or (2) by pivotal motion of a member pivoted to a working member
at one end and connected to a transmission at its other end.
SEE OR SEARCH CLASS:
| |||||
| 186 | Connection includes toothed gearing or rocking lever: | ||||
| This subclass is indented under subclass 183. Apparatus in which the member, linkage, or transmission
which connects plural working members for relative movement is formed,
at least in part, by either (1) gearing having intermeshing teeth
or cogs such as a rack and pinion or (2) by an elongated member
which is pivoted to oscillate about a transverse axis and is engaged
at points spaced from said axis by means connecting it to the working
members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
| 187 | Means varies cyclic relation between working member and control valve therefor: | ||||||||
This subclass is indented under subclass 183. Apparatus having means actuated by a working member to control
the motive fluid for said working member, said means being adjustable to
vary the position of the working member at which control occurs.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 188 | Motive fluid control actuator includes cam or crank rigid with means connecting working members: |
| This subclass is indented under subclass 183. Apparatus in which the valve means to control flow of motive fluid to or from a working member is actuated by a cam, an eccentric or a part moving in a circular path and either (1) forming a portion of the means to connect plural working members for relative motion or (2) connected to said connecting means to move therewith as a unit. | |
| 189 | Position of one working member controls motive fluid for another: | ||||||
This subclass is indented under subclass 170. Apparatus in which motive fluid for one of said working
members is controlled in response to another working member attaining
a given position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 190 | Changeable to plural self-controlled working members: | ||
| This subclass is indented under subclass 189. Apparatus having plural working members at least one of
which actuates control valve means for another working member and
in which means are provided to disassociate said control valve means
from said one working member and connect it for operation by the
working member which it controls to thereby provide plural self-controlled
working members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 191 | Each cyclically controls another (e.g., duplex, etc.): | ||||
| This subclass is indented under subclass 189. Apparatus in which each working member actuates a valve
means controlling another working member in successive fashion to
provide cyclic operation, e.g., "duplex" motor,
etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
| 192 | With three or more working members: |
| This subclass is indented under subclass 191. Apparatus having at least three working members, at least two of which are controlled by valve means actuated by a different working member than the working member controlled thereby. | |
| 193 | Fluid operated valve controlled by relatively movable working member: |
| This subclass is indented under subclass 191. Apparatus having a valve controlling motive fluid flow to or from at least one of plural working members, fluid operated means to move the valve, and means to control the supply of fluid to said valve moving means in response to the position of another relatively movable working member. | |
| 194 | Rotating output shaft type (e.g., locomotive or reversing means, etc.): | ||
This subclass is indented under subclass 191. Apparatus having a disclosure of a means to convert the
motion of the working members to a rotary output.
| |||
| 195 | With self-control: | ||||||||
This subclass is indented under subclass 191. Apparatus having valve means controlling only a first working
member, means to actuate the valve means by said first working member
and additional means to actuate said valve means by a different
working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 196 | MOVING CYLINDER: | ||||||||||||||||
This subclass is indented under the class definition. Apparatus in which, incident to the operation of the motor,
the cylinder has an absolute movement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
| 197 | Plural rigidly connected rotary cylinders: | ||||
| This subclass is indented under subclass 196. Apparatus comprising a plurality of working chambers formed
by rigidly connected cylinders mounted for continuous rotation in
a single direction about a fixed or movable axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 206 | With integral exterior working face: | ||
| This subclass is indented under subclass 196. Apparatus in which a unitary cylinder has a first internal
working face actuated by motive fluid to urge the cylinder in one
direction of movement and has a second working face extending outwardly
or formed exteriorly thereof, said second face being a piston, the faces
forming portions of separate working chambers and being urged by
motive fluid in the same or different directions simultaneously or
at different times.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 207 | Both faces urged in single direction: |
| This subclass is indented under subclass 206. Apparatus in which the first and second working faces are so disposed on the cylinder that when motive fluid is applied thereto both surfaces urge the cylinder in the same direction. | |
| 208 | Fluid to exterior face controlled by motive fluid pressure: |
| This subclass is indented under subclass 207. Apparatus comprising means for applying motive fluid to the first working face, and means responsive to a change of the pressure of the motive fluid being applied thereto to cause motive fluid to be applied to the second working face. | |
| 209 | Fluid to exterior face controlled by cylinder position: |
| This subclass is indented under subclass 207. Apparatus comprising means for applying motive fluid to the first working face, and means responsive to the cylinder attaining a given position to cause motive fluid to be applied to the second working face. | |
| 210 | Oscillating cylinder: | ||||||
This subclass is indented under subclass 179. Apparatus in which the cylinder swings back and forth in
an arcuate path of not more than 360° about a fixed pivot,
incident to operation of the motor.
SEE OR SEARCH CLASS:
| |||||||
| 211 | Cooperating valve ports in cylinder and fixed member: |
| This subclass is indented under subclass 210. Apparatus comprising a stationary member on which the cylinder moves during oscillation, the stationary member having ports therein through which motive fluid is conveyed, and the cylinder having ports aligning with the ports in the stationary member to valve the motive fluid. | |
| 212 | Ported end bearing: |
| This subclass is indented under subclass 211. Apparatus in which the cylinder oscillates about an axis transverse to the longitudinal axis of the cylinder the ported stationary member being located at one end of the cylinder and forming means on which the cylinder rocks or slides. | |
| 213 | Ported trunnion: | ||
| This subclass is indented under subclass 211. Apparatus in which the cylinder has at least one laterally
extending trunnion forming a member by which the cylinder is pivoted,
a bearing member supporting the trunnion, and fluid ports in the
trunnion cooperating with fluid ports in the bearing member to valve
the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 214 | Ported arcuate slide face on which cylinder moves: |
| This subclass is indented under subclass 211. Apparatus in which the stationary member has an arcuate surface, an arcuate surface on the cylinder engaging therewith, fluid ports in the surfaces, the oscilation of the cylinder causing relative sliding motion between the two surfaces to align the ports and valve the motive fluid. | |
| 215 | Cylinder carried valve operated by fixed actuator: |
| This subclass is indented under subclass 210. Apparatus comprising a valve that oscillates with the cylinder and in addition has sliding movement relative thereto, a stationary member to which the valve is connected, the sliding movement of the valve being caused by the oscillation of the cylinder relative to the stationary member. | |
| 216 | Cylinder and piston have relative reciprocation on fixed axis: | ||||
This subclass is indented under subclass 196. Apparatus in which the cylinder has a piston therein, the
cylinder having absolute movement back and forth in a fixed straight
line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 217 | Reciprocating piston and cylinder: |
| This subclass is indented under subclass 216. Apparatus in which the piston partakes of absolute back and forth movement in a fixed straight line. | |
| 218 | CYCLICALLY OPERABLE: | ||||||||||||||||||||||||||||||||||
This subclass is indented under the class definition. Apparatus in which the motor has a cycle of operation in
which the working member moves in one direction, reverses its direction
of movement and returns to the original position, so as to be in
condition to repeat the operation, and in which a distributor or
other means, operated as a consequence of motor working member movement
or cyclic change of pressure in a working chamber, is provided to
control the flow of motive fluid so as to cause the motor, when
started, to continuously repeat the cycle of operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||||||||||||||||||||
| 219 | With dwell: |
| This subclass is indented under subclass 218. Apparatus having (1) means to bring the working member of the motor to a complete stop by controlling the motive fluid or to sense that the working member has stopped, (2) means to maintain said member stopped for a given period of time and (3) means to again cause the working member to move by controlling the motive fluid after expiration of said period of time. | |
| 220 | With condition responsive stop means: | ||
| This subclass is indented under subclass 218. Apparatus including means to halt operation of the motor
said means being responsive to a condition of operation of the motor
or of the motive fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 221 | Speed: | ||||
| This subclass is indented under subclass 220. Apparatus in which the condition sensed to stop the motor
is the speed of operation of the motor or the failure of a driving
connection between the motor and a speed regulating governor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
| 222 | Distributor in piston (422): | ||||||||
| This subclass is indented under subclass 218. Apparatus in which a passage is provided entirely within
the piston or piston rod for inlet or exhaust of motive fluid and
a distributor movable relative to both the piston and cylinder is
carried by the piston or piston rod and controls said passage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
| 223 | Oscillating piston (e.g., vane, etc.): | ||
This subclass is indented under subclass 222. Apparatus in which the piston moves back and forth about
an axis to describe an arc of not more than 360°.
| |||
| 224 | Distributor establishes communication between opposite faces of piston: |
| This subclass is indented under subclass 222. Apparatus in which the distributor controls a passage in the piston which is adapted to convey fluid through a working face of the piston to a face which is axially opposed. | |
| 225 | Piston traverses pilot port to control distributor motor motive fluid: |
| This subclass is indented under subclass 222. Apparatus in which the distributor in the piston is operated by a fluid motor, and a port is provided in the working chamber side wall to convey inlet or exhaust for the distributor motor, the position of the piston controlling said port so as to control supply or exhaust for the distributor motor. | |
| 226 | Communication into piston through peripheral port: |
| This subclass is indented under subclass 222. Apparatus in which the inlet or exhaust of motive fluid is through a port in the side wall of the working chamber which communicates with the distributor controlled passage which opens through the side of the piston. | |
| 227 | Port controlled by piston position: | ||
| This subclass is indented under subclass 226. Apparatus in which communication between the port in the
working chamber and the passage in the piston is established and
broken by relative reciprocation of the two members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 228 | Piston carries separate inlet and exhaust valves: |
| This subclass is indented under subclass 222. Apparatus in which the piston is provided with relatively movable valves which control inlet and exhaust passages to and from a working chamber. | |
| 229 | Distributor operated by abutment with cylinder head: | ||
| This subclass is indented under subclass 222. Apparatus in which the distributor is cyclically moved by
a part thereof contacting the cylinder head in the working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 230 | Codirectional separately supplied working members: | ||
This subclass is indented under subclass 218. Apparatus in which plural working members acting in the
same direction are provided with a separately controlled supply
of motive fluid, said working members being (1) relatively movable
or (2) connected to move together as a unit under all conditions
of operation and which have different faces forming moving walls
of different working chambers which are not in fluid communication
during at least some part of a cycle of operation of the apparatus.
| |||
| 231 | One working member supply is distributor controlled: |
| This subclass is indented under subclass 230. Apparatus in which one of the plural working members acting in the same direction is controlled by a distributor. | |
| 232 | Valveless distribution: | ||||
| This subclass is indented under subclass 218. Apparatus in which closing and opening of fluid flow paths
for cyclically admitting and exhausting motive fluid to and from
an expansible chamber of the motor are accomplished by movement
of the motor working member to and from positions in which it obstructs
fluid flow through said flow paths, said flow paths not being further
controlled by a cyclically operated valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
| 233 | Distribution by reciprocating working member moving about an axis: |
| This subclass is indented under subclass 232. Apparatus in which the motor is of the reciprocating type and means are provided to rotate or oscillate the working member about its own axis incident to reciprocation, the opening and closing of fluid flow paths being accomplished as a result of movement of the working member about its axis. | |
| 234 | Working member formed to provide internal fluid flow passage: | ||
| This subclass is indented under subclass 232. Apparatus in which a fluid flow path for cyclically admitting
or exhausting motive fluid to or from an expansible chamber of the
motor includes a fluid flow passage formed, at least in part, by
a passage entirely within the motor working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 235 | Working chamber receives controlled motive fluid supply from opposed chamber having constant supply (321) (417): | ||||||
| This subclass is indented under subclass 218. Apparatus in which the motor is provided with a first working
chamber which is constantly supplied with motive fluid, and a second
working chamber acting in a direction opposite to the first working
chamber, said second working chamber being supplied with distributor controlled
motive fluid which is taken from the first working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 236 | Multiple exhaust passages (e.g., compression control, etc.): | ||||||||||
This subclass is indented under subclass 218. Apparatus in which there are provided a plurality of controlled,
i.e., valved or working member position controlled, exhaust flow
paths from a working chamber, i.e., exhausting, one of said flow
paths constituting a second exhaust passage which provides for exhaust flow
or continuation of exhaust flow after another of said flow paths
has been closed, or provides a flow path, separate and distinct
from another of said flow paths, for the removal of condensate from
the expansible chamber in synchronism with movement of the working member
of the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 237 | Exhaust valve has separate valve controlled second exhaust passage therein: |
| This subclass is indented under subclass 236. Apparatus comprising a valve member which moves to cyclically control a first exhaust passage, said movable valve member having a second exhaust passage therein, and relatively movable means to open and close said second exhaust passage during different phases of the cycle of operation of the motor or under different conditions of operation of the motor. | |
| 238 | Pressure controlled second passage: |
| This subclass is indented under subclass 237. Apparatus in which the relatively movable means which controls the second exhaust passage is moved to cause such control by pressure of fluid within the expansible chamber. | |
| 239 | Distributor for inlet or first exhaust controls second exhaust passage: | ||
This subclass is indented under subclass 236. Apparatus in which a distributor is moved to cyclically
control inlet of fluid to an expansible chamber, or to control exhaust
of fluid from the expansible chamber through a first exhaust passage,
and said distributor, or means rigidly attached thereto, directly
controls the second exhaust passage.
| |||
| 240 | Fluid pressure actuated valve for second exhaust passage: | ||
| This subclass is indented under subclass 236. Apparatus in which the second exhaust passage is provided
with a valve which is moved to open or close said passage by fluid
pressure acting on the valve or on its actuator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 241 | Compression actuated discharge to motive fluid supply: |
| This subclass is indented under subclass 240. Apparatus in which the second exhaust passage is connected to the motive fluid supply, and the valve which controls said second passage is biased to closed position by fluid supply pressure; said valve being opened by compression pressure within the working chamber which exceeds the supply pressure, to permit motive fluid to pass from the expansible chamber to the fluid supply. | |
| 242 | Exhaust pressure controlled: | ||||
This subclass is indented under subclass 240. Apparatus in which the valve is moved by pressure within
or from the contracting chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 243 | Working member controlled exhaust port with valved second exhaust passage: | ||
| This subclass is indented under subclass 236. Apparatus in which exhaust of motive fluid through an exhaust
flow path is controlled by the motor working member uncovering an exhaust
port, and exhaust of motive fluid through a second exhaust flow
path is controlled by a valve operating in synchronism with motor
operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 244 | Controlled by separate relatively movable valves: | ||||||
| This subclass is indented under subclass 236. Apparatus in which a plurality of exhaust flow paths are
each controlled by a different valve, said valves being movable
to cyclically control fluid flow through the different flow paths,
and also being relatively movable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 245 | Clearance control: | ||||||
| This subclass is indented under subclass 218. Apparatus which includes means by which the volume of the
working chamber, when the working member has reached the end of
its stroke in the direction which contracts said chamber may be
varied without altering the length of stroke of the working member.
SEE OR SEARCH CLASS:
| |||||||
| 246 | Correlated throttle valve and distributor: | ||
This subclass is indented under subclass 218. Apparatus in which a throttle valve and distributor are
in series in a fluid flow path, the throttle valve controlling fluid
flow to or from the motor, and in which the operating means for the
throttle valve and distributor are so related that (1) the throttle
valve is moved to vary the flow and the distributor is adjusted
to vary the cycle of motive fluid distribution with respect to the
working member movement cycle, in response to the same motor condition,
e.g., speed, etc., or to the same operation of a common control
means, or (2) either the throttle valve, or distributor, is adjusted
to vary the flow of motive fluid, or the cycle of motive fluid distribution
with respect to the working member movement cycle, respectively,
in response to the change of a condition, e.g., pressure, etc.,
resulting from the adjustment of the distributor or throttle valve
respectively.
| |||
| 247 | Timing control by relative adjustment of plural movable fluid control elements: | ||||||
This subclass is indented under subclass 218. Apparatus in which an expansible chamber is provided with
a distributor having (1) a plurality of fluid control elements each
of which move to cyclically control the flow of motive fluid and
which, in addition to such control movement, are relatively adjustable
so as to vary the time of occurrence of a fluid control event with
respect to the movement cycle of the motor working member, and with
respect to the occurrence of another fluid control event, or (2)
a relatively fixed, but adjustable, fluid control element which
cooperates with a moving fluid control element to cyclically produce one
or more but not all of the fluid control events, and is adjusted
so as to vary the time of occurrence of a fluid control event produced
by the cooperation of the relatively fixed and moving fluid control
elements, with respect to the movement cycle of the motor working member
and with respect to the occurrence of another fluid control event.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 248 | Electrical adjustment: | ||||||
| This subclass is indented under subclass 247. Apparatus in which electrically operated means are provided
to move or control the movement of a fluid control element, and
adjustable electrical control means are provided to vary the operation
of the electrically operated means so as to vary the timing of a
fluid control event.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 249 | With relative adjustment of plural adjustable fluid control elements: |
| This subclass is indented under subclass 247. Apparatus in which there are provided plural fluid control elements which are separately adjustable relative to the movement cycle of the motor so as to control the time of occurrence of one of a plurality of adjustable events with respect to the time of occurrence of another of a plurality of adjustable events. | |
| 250 | Adjustable inlet and exhaust events: |
| This subclass is indented under subclass 249. Apparatus in which the adjusting means provides for adjusting the time of occurrence of the starting or stopping of fluid flow to the working chamber and the starting or stopping of fluid flow from the working chamber. | |
| 251 | With adjustable release and compression events: |
| This subclass is indented under subclass 250. Apparatus in which the adjusting means provides for adjustment of the time of occurrence of the starting and stopping of fluid flow to the motor working chamber, and the starting and stopping of fluid flow from the motor working chamber with respect to the motor working member movement cycle. | |
| 252 | Cut off adjustable relative to admission: |
| This subclass is indented under subclass 247. Apparatus in which the adjusting means provides for adjusting a fluid control element with respect to another fluid control element so as to vary the time of stopping of fluid flow to the motor working chamber, with respect to the working member movement cycle and with respect to the starting of flow to the motor working chamber. | |
| 253 | Inlet controlled by relatively cyclically moved elements: | ||
| This subclass is indented under subclass 252. Apparatus in which cyclic starting and stopping of motive
fluid flow to the working chamber is controlled by valve means having
a plurality of relatively cyclically moved fluid flow control elements,
and in which means are provided to adjust a fluid flow control element which
controls the stopping of fluid flow so as to vary the time of occurrence
of the cut off event with respect to the working member movement
cycle and with respect to the occurrence of the admission event.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 254 | Biased cut off with adjustable trip: | ||||||
| This subclass is indented under subclass 253. Apparatus in which the means to adjust the control element
for stopping fluid flow include means to move or hold said element
from its fluid flow stopping position against a biasing force tending
to move it to said fluid flow stopping position and adjustable means
to release said moving or holding means to allow said biasing force
to move said element to its fluid flow stopping position so as to
vary the time of occurrence of the cut-off event.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 255 | Adjustable fluid control for fluid actuated cut off: | ||||
| This subclass is indented under subclass 253. Apparatus in which the means to adjust the control element
for stopping motive fluid flow includes means cyclically moved by
an actuating fluid to move the control element to or from its flow
stopping position and adjustable means to control the actuating
fluid flow so as to vary the time of occurrence of the cut-off event.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 256 | Cut off adjustable relative to reciprocating admission element: |
| This subclass is indented under subclass 253. Apparatus in which the means to adjust the control element for stopping fluid flow includes means to move, or to vary the movement of the control element with respect to a reciprocating admission control element so as to vary the time of occurrence of the cut-off event. | |
| 257 | Oscillating admission element: |
| This subclass is indented under subclass 256. Apparatus in which the admission control element moves back and forth about an axis. | |
| 258 | Arcuate adjustment of cut off: | ||
| This subclass is indented under subclass 256. Apparatus in which the means to adjust the control element
for stopping fluid flow includes means to move or vary the movement of
said control element in a arcuate path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 259 | Cut off adjustable codirectional with admission element movement: | ||
| This subclass is indented under subclass 256. Apparatus in which the means to adjust the control element
for stopping fluid flow includes means to move or vary the movement of
said control element in a direction parallel to or in alignment
with the linear direction of movement of an admission control element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 260 | Biased inlet valve with adjustable tripping means: | ||||||
| This subclass is indented under subclass 252. Apparatus in which a releasable drive means, or a releasable
latch, is provided to cyclically open or hold open, respectively,
the inlet valve against a biasing force tending to move said valve
to a closed position, and in which adjustable means are provided
to release said drive means or said latch to allow the biasing force to
close said valve, so as to vary the time of closing of the inlet
valve means with respect to the motor movement cycle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 261 | Inlet valve movable about an axis: |
| This subclass is indented under subclass 260. Apparatus in which the inlet valve is moved about an axis by said driving means and said biasing force to open and close the inlet fluid flow path. | |
| 262 | Adjustable cam or cam follower actuated inlet valve: | ||||
This subclass is indented under subclass 252. Apparatus in which the inlet valve is cyclically moved,
to control the flow of motive fluid to the working chamber, by cam
means, and means are provided to adjust the cam means, or a valve
driving member moved by the cam means, so as to vary the time of
closing of the inlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 263 | Adjustable fluid control for fluid actuated inlet valve: | ||||||||||
| This subclass is indented under subclass 252. Apparatus in which the inlet valve is cyclically moved to
control the flow of motive fluid to the working chamber by working
member controlled actuating fluid, and means are provided to adjust
the control of the inlet valve actuating fluid so as to vary the
time of closing of the inlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 264 | Relatively movable serial distributors: | ||||
| This subclass is indented under subclass 218. Apparatus including at least two distributors through which
the motive fluid must pass serially in the course of flowing either
to the working chamber or exhausting from the working chamber, each
distributor having a cyclically moved flow controlling element so
arranged that the control of motive fluid by the distributors is
effected by the movement of one distributor relative to the movable
element of another distributor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 265 | Relatively movable inlet and exhaust valves: | ||||||||||||
| This subclass is indented under subclass 218. Apparatus in which the distributor comprises movable inlet
and exhaust valve means for controlling motive fluid flow to and
from an expansible chamber, said valve means cyclically moving relative
to one another as a consequence of operation of the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
| 266 | Oscillating working member: |
| This subclass is indented under subclass 265. Apparatus in which the working member moves back and forth about an axis to describe an arc of not more than 360°. | |
| 267 | Lost motion drive from inlet to exhaust valve: | ||
| This subclass is indented under subclass 265. Apparatus in which the inlet and exhaust valve means move
in a back and forth motion to cyclically open and close, respectively,
the inlet and exhaust flow paths, the exhaust valve means being
moved by the inlet valve means during a portion of the movement
of the inlet valve means, and having a lost motion connection therewith,
to provide a delay in the opening and/or closing of the
exhaust flow path with respect to closing and/or opening
movement of the inlet valve means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 268 | Exhaust valve closed or held closed by inlet fluid (442): | ||
| This subclass is indented under subclass 265. Apparatus in which cyclic admission of motive fluid is provided
by operation of the inlet valve means and exhaust is provided by
opening of an exhaust valve which is cyclically moved to or held
in its closed position by pressure or flow of the motive fluid cyclically
admitted by the inlet valve means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 269 | Biased valve with trip: | ||||
| This subclass is indented under subclass 265. Apparatus in which a releasable drive means is provided
to cyclically open the inlet and/or exhaust valve means
against a resisting force, and means are provided to release said
drive means to allow said force to close the valve means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 270 | Inlet and exhaust valve movable about an axis: |
| This subclass is indented under subclass 265. Apparatus in which the inlet and exhaust valve means are each movable about an axis to cyclically control inlet and exhaust flow of motive fluid to and from a motor working chamber. | |
| 271 | Reciprocating inlet and exhaust valves: |
| This subclass is indented under subclass 265. Apparatus in which the inlet and exhaust valve means each moves in a back and forth motion to cyclically control inlet and exhaust of motive fluid to and from a motor working chamber. | |
| 272 | Codirectional with working member movement: | ||
| This subclass is indented under subclass 271. Apparatus in which the path of reciprocating movement of
both the inlet and exhaust valve means is in alignment with or parallel
to the path of movement of the motor working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 273 | Axially seating valves: |
| This subclass is indented under subclass 272. Apparatus in which the inlet and exhaust valve means are of the type in which a valve member moves perpendicularly to or from its seat to close or open the fluid flow path. | |
| 274 | With independent throttle adjustment for one side of double-acting motor: |
| This subclass is indented under subclass 218. Apparatus in which the motor is operated by motive fluid pressure applied to opposing faces of a working member, and in which means are provided to controllably vary the fluid handling capacity of either an inlet or exhaust passage to or from one of the working faces, without affecting the fluid handling capacity of the corresponding passage to or from the opposite working face. | |
| 275 | Electrically or magnetically actuated or adjusted distributor (459): | ||||||
This subclass is indented under subclass 218. Apparatus in which the distributor or distributor actuating
means includes an element which is operated by an electric current
or a magnetic field.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 276 | Distributor forms traversed movable portion of working chamber wall (423): | ||||||
| This subclass is indented under subclass 218. Apparatus in which the distributor comprises a movable fluid
control element which is arranged so as to completely encompass
the working member in a plane transverse to the reciprocatory path
of said working member, the working member reciprocating relative
to the fluid control element, and the fluid control element forming
a portion of the working chamber wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
| 277 | Adjustable working member reversal position (e.g., stroke control, etc.): | ||||||
| This subclass is indented under subclass 218. Apparatus in which the distributor or distributor actuating
means includes selectively operable means to adjustably cause the
working member to reverse at two different extents of movement in
one direction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 278 | Selective diverse supply or exhaust paths for distributor motor: | ||
| This subclass is indented under subclass 277. Apparatus in which diverse flow paths are provided for supply
or exhaust to or from a distributor motor working chamber, and the selectively
operable means determines the path of flow to adjustably control
the point of reversal of the output motor working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 279 | Adjustable lost motion connection: |
| This subclass is indented under subclass 277. Apparatus in which the selectively operable means comprises a lost motion connection between the working member and the distributor, the amount of lost motion being adjustable. | |
| 280 | Pulsator-actuated distributor (460): | ||
| This subclass is indented under subclass 218. Apparatus in which the distributor is cyclically actuated
by a substantially constant mass of fluid forming a fluid link between
a valve actuating surface and an actuated surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 281 | Working member controlled motive fluid for distributor motor: | ||||||||||||||
This subclass is indented under subclass 218. Apparatus in which the working member position controls
or varies the supply or exhaust of motive fluid for a motor which
cyclically moves the distributor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||
| 282 | Fluid supply through diverse paths to distributor motor chamber: | ||
| This subclass is indented under subclass 281. Apparatus in which the distributor motor working chamber
is provided with inlet motive fluid which is supplied from different
sources at different times or flows through supply paths that are
different at the will of the operator or under different operating
conditions so as to supply force to act on the same face of the
working member at different times.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 283 | Path controlled by independently operable means: |
| This subclass is indented under subclass 282. Apparatus in which a manually operable means is provided to separately control one of the sources or paths. | |
| 284 | Independent means to adjust distributor motor supply or exhaust passage: | ||||
| This subclass is indented under subclass 281. Apparatus in which a manually operable means is provided
to selectively vary the flow carrying capacity of a passage which
supplies fluid to or exhausts fluid from a fluid operated distributor
motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 285 | Separately adjusts one chamber of double-acting distributor motor: | ||
| This subclass is indented under subclass 284. Apparatus in which the means varies the supply or exhaust
passage for one chamber of a double acting distributor motor without
affecting the supply or exhaust for the opposed chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 286 | Distributor or distributor motor mechanically moved cyclically to control actuating fluid for distributor motor: |
| This subclass is indented under subclass 281. Apparatus in which a mechanical linkage or transmission connected to or engaged by the output motor working member moves the distributor motor working member, such movement controlling a port supplying fluid to or exhausting fluid from the distributor motor working chamber to cause an additional fluid powered movement of the distributor motor working member. | |
| 287 | Movement of relatively movable pilot mechanically moves distributor: | ||
This subclass is indented under subclass 286. Apparatus in which the movement of the distributor motor
working member which is caused mechanically moves a relatively movable
valve means which controls the distributor motor supply or exhaust
port.
| |||
| 288 | Distributor motor mechanically moved about axis: | ||
This subclass is indented under subclass 286. Apparatus in which the mechanically caused movement of the
distributor is about an axis, followed by a fluid actuated movement
which may or may not be the same type as the mechanically caused
movement.
| |||
| 289 | Adjustable means to retard or lock distributor motor: |
| This subclass is indented under subclass 281. Apparatus in which a manually operable means is provided to (1) adjust a means such as a brake or dash pot to control rate of movement of the distributor working member or (2) hold the distributor motor in a predetermined position. | |
| 290 | Working member traverses pilot port in working chamber side wall: | ||
This subclass is indented under subclass 281. Apparatus in which a passage is provided to convey motive
fluid to or convey exhaust fluid from a distributor motor working
chamber, said passage receiving motive fluid from the output motor
working chamber or receiving exhaust fluid from the distributor
motor working chamber and being connected to a port in the output
motor working chamber wall which is controlled by the reciprocatory
motion of the output motor working member.
| |||
| 291 | Port controls separate motor for intermediate pilot valve: |
| This subclass is indented under subclass 290. Apparatus in which the port in the output motor working chamber controls a pilot valve motor which further controls the motor operating the distributor for the output motor. | |
| 292 | Distributor controls passage from port: |
| This subclass is indented under subclass 291. Apparatus in which the distributor or distributor working member further controls the passage leading from the output motor working chamber to the pilot valve motor. | |
| 293 | With passage from port controlled by pilot valve: |
| This subclass is indented under subclass 290. Apparatus in which a cyclically operated valve controls the passage from the output motor working chamber to the distributor motor working chamber. | |
| 294 | Pilot valve operated by separately controlled fluid motor: | ||
This subclass is indented under subclass 293. Apparatus in which the cyclically operated valve is operated
by a fluid motor the fluid supply or exhaust of which is controlled
separately from the distributor motor supply.
| |||
| 295 | Plural ports control relatively movable distributor motors: |
| This subclass is indented under subclass 290. Apparatus in which the output motor working member controls separate ports in the working chamber wall, said ports conveying fluid in such a manner as to cause relative movement of plural distributor motors. | |
| 296 | Constantly open exhaust from distributor working chamber: | ||
| This subclass is indented under subclass 290. Apparatus in which the distributor motor working chamber
is constantly connected to exhaust, said exhaust being throttled
with relation to controlled supply through the working member controlled
port to cause distributor cyclic operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 297 | With passage for pilot fluid in working member: | ||||
This subclass is indented under subclass 290. Apparatus in which the output motor working member is provided
with a passage to convey fluid to or from the distributor motor
working chamber.
| |||||
| 298 | Working member passage supplies distributor motive fluid: |
| This subclass is indented under subclass 297. Apparatus in which the passage in the output motor working member supplies inlet motive fluid to the distributor working chamber. | |
| 299 | With distributor reversal by fluid compressed by working member: |
| This subclass is indented under subclass 290. Apparatus in which the distributor motor working member is moved in one direction by fluid compressed in the output motor working chamber by the movement of the output motor working member. | |
| 300 | With distributor reversal by constantly supplied motive fluid: |
| This subclass is indented under subclass 290. Apparatus in which the distributor motor working member is moved in one direction by motive fluid which is continuously applied to the distributor motor working member. | |
| 301 | With control of distributor motor supply or exhaust port by distributor working member: | ||
This subclass is indented under subclass 290. Apparatus in which the distributor motor working member
controls a port in the distributor motor working chamber which conveys
fluid to or from the distributor motor working chamber.
| |||
| 302 | Pilot port relieved into working chamber having working member controlled exhaust port: |
| This subclass is indented under subclass 290. Apparatus in which the pilot port conducts exhaust fluid from the distributor motor working chamber into the output motor working chamber, said output motor working chamber being exhausted through a port in the wall thereof which is controlled by the position of the output motor working member. | |
| 303 | Working member adapted to directly mechanically reverse distributor: | ||
| This subclass is indented under subclass 281. Apparatus in which the distributor is adapted to be moved
cyclically solely by mechanical connection with the output motor
working member (1) in one direction of movement for each complete
cycle of operation or (2) as a safety measure to insure the continuous
operation of the motor, even if the fluid operated distributor motor
fails to properly function.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 304 | Pilot valve controlled distributor motor (461): | ||||
| This subclass is indented under subclass 281. Apparatus in which a fluid passage is controlled by a relatively
movable valve in response to movement of the output motor working
member to a predetermined position to cyclically connect the distributor
motor working chamber to exhaust or motive fluid supply.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 305 | Plural pilot valves: |
| This subclass is indented under subclass 304. Apparatus in which the distributor motor is controlled by plural, relatively movable pilot valves, either in series or parallel. | |
| 306 | Independent: | ||
This subclass is indented under subclass 305. Apparatus in which each pilot valve controls the distributor
motor independent of the movement of any other pilot valve.
| |||
| 307 | Pilot valve relieves constantly supplied distributor motor fluid: | ||
| This subclass is indented under subclass 304. Apparatus in which the pilot valve controls the exhaust
of motive fluid from the distributor motor working chamber, said
chamber being constantly supplied with motive fluid under all conditions
of operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 308 | Fluid-operated pilot valve: | ||||||
| This subclass is indented under subclass 304. Apparatus in which the pilot valve is moved by a fluid operated
motor controlled by position of the output motor working member
or pressure in the output motor working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 309 | With distributor motor reversal by constantly applied fluid pressure: | ||
| This subclass is indented under subclass 304. Apparatus in which the distributor motor working member
is moved in one direction by continuously applied fluid pressure
and in the opposing direction by fluid under control of the pilot
valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 310 | Pilot valve moves about an axis: |
| This subclass is indented under subclass 304. Apparatus in which the pilot valve is cyclically moved about an axis. | |
| 311 | Pilot valve moves laterally relative to working member reciprocatory path: |
| This subclass is indented under subclass 304. Apparatus in which the pilot valve is given a cyclic movement which is not substantially parallel to the reciprocatory path of movement of the output motor working member. | |
| 312 | Distributor motor working member is valve seat for pilot valve: |
| This subclass is indented under subclass 304. Apparatus in which a distributor motor motive fluid supply or exhaust port is provided in the distributor motor working member and said port is controlled by relative movement between said working member and the pilot valve. | |
| 313 | Pilot valve actuator extends into working chamber: |
| This subclass is indented under subclass 304. Apparatus in which means transmitting cyclic motion from the output motor working member to the pilot valve includes an element which moves relative to the working member and extends into the working chamber. | |
| 314 | Working member reverses pilot through part movable relative to both: |
| This subclass is indented under subclass 304. Apparatus in which means transmitting cyclic motion from the output motor working member to the pilot valve includes an element moved relative to both the working member and pilot valve at least once during each cycle of operation. | |
| 315 | Distributor moves about an axis: |
| This subclass is indented under subclass 281. Apparatus in which the distributor is cyclically moved about an axis. | |
| 316 | Distributor moves laterally relative to working member reciprocatory path: |
| This subclass is indented under subclass 281. Apparatus in which the distributor is given a cyclic movement which is not substantially parallel to the reciprocatory path of movement of the output motor working member. | |
| 317 | Working member compresses fluid to reverse distributor: | ||
| This subclass is indented under subclass 281. Apparatus in which the distributor motor working member
is moved by fluid compressed in the output motor working chamber
by the movement of the output motor working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 318 | Motive fluid build-up at end of working stroke reverses distributor: |
| This subclass is indented under subclass 281. Apparatus in which the reaching of the terminus of a stroke of the output motor working member results in increase of pressure in the working chamber due to continued supply of motive fluid without working member movement, the increase of pressure in the working chamber causing the distributor motor to shift the distributor to reverse the direction of movement of the output motor working member. | |
| 319 | Working member traverses pilot passage to control distributor motor: | ||||
| This subclass is indented under subclass 281. Apparatus in which fluid communication through a motive
fluid supply or exhaust passage for a fluid actuated distributor
motor is cyclically connected and disconnected by the output motor
working member which acts directly as a valve for said passage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 320 | Port in piston between opposed working faces: |
| This subclass is indented under subclass 319. Apparatus in which the working member comprises a piston having opposed working faces and a passage on or in the piston between the opposed working faces, the distributor motor fluid being conveyed to or from the distributor motor working chamber by said passage. | |
| 321 | Motive fluid constantly applied to one working member face (235) (417): | ||||||
| This subclass is indented under subclass 218. Apparatus in which motive fluid is continuously supplied
to one chamber to act constantly on a working member of a motor
during recurring cycles thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 322 | With independently operable means to lock distributor: | ||||
| This subclass is indented under subclass 218. Apparatus including means operable independent of working
member movement to positively hold the distributor in set position relative
to the ports in the valve seat with which the distributor normally
cooperates to control the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 323 | Relatively movable distributors for opposed working chambers: | ||
| This subclass is indented under subclass 218. Apparatus in which the motor comprises opposed working chambers
and separate distributors for the working chambers, said distributors
being free of one another to cyclically relatively move during operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 324 | Distributor moves about an axis: | ||
| This subclass is indented under subclass 323. Apparatus in which at least one of the distributors is cyclically
moved about an axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 325 | Working member controlled inlet or exhaust port (e.g., semi-valveless, etc.): | ||||||
| This subclass is indented under subclass 218. Apparatus in which inlet or exhaust of motive fluid is controlled
by the motor working member uncovering a motive fluid inlet or exhaust port
which is not further controlled by a cyclically operated valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 326 | Distributor moves transverse and parallel to same line: | ||
This subclass is indented under subclass 218. Apparatus in which the distributor is moved in a first direction,
e.g., about an axis, etc., and also in another direction which is
not substantially parallel to the first direction.
| |||
| 327 | Distributor moves about axis parallel to working member reciprocatory path: | ||
| This subclass is indented under subclass 218. Apparatus in which the distributor is moved about an axis
which extends substantially parallel to the axis of reciprocation
of the motor working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 328 | Distributor peripherally engages (1) working chamber wall, or (2) cylinder between opposed working faces: |
| This subclass is indented under subclass 218. Apparatus in which the distributor and the motor piston have approximately the same cross-sectional configuration so as to cooperate with common cylindrical walls of the motor cylinder, the distributor being located either in a working chamber or in a space formed between opposed working member faces. | |
| 329 | Distributor located in cylinder between spaced working faces: | ||
| This subclass is indented under subclass 218. Apparatus in which the distributor is located within the
periphery of a cylinder defined by spaced working member faces,
and within the space between the faces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 330 | With independently operable means to move or means to adjust movement of distributor: | ||||||||||||||||||||
This subclass is indented under subclass 218. Apparatus in which means are provided to (1) move a distributor
independently of motor operation or (2) adjust movement of a distributor
relative to the movement of the working member either independently
of or in response to a condition of motor operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||||||
| 331 | Means adjusts motion transmission from working member to distributor: | ||||||||||
| This subclass is indented under subclass 330. Apparatus in which a mechanical means connects the working
member to the distributor, and the mechanical means is manipulated
or adjusted to move or control movement of the distributor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
| 332 | Adjusting means comprises motor: |
| This subclass is indented under subclass 331. Apparatus in which the mechanical means is manipulated or adjusted by a motor. | |
| 333 | Speed controlled: |
| This subclass is indented under subclass 331. Apparatus in which the manipulating or adjusting means is operated in response to a means, e.g., governor, etc., sensing a speed condition of the motor. | |
| 334 | To reverse direction of rotation of interposed shaft: |
| This subclass is indented under subclass 331. Apparatus in which the manipulation or adjustment of the mechanical means results in causing a shaft forming part of the mechanical means (generally the output shaft of the motor) to change direction of continuous unidirectional rotation. | |
| 335 | With throttle valve or distributor throttle adjustment: | ||||||||||
| This subclass is indented under subclass 218. Apparatus including (1) a valve positioned in the motor
inlet or exhaust line which is operable independently of motor operation
to selectively vary the fluid handling capacity thereof or (2) a
distributor which is selectively adjustable either by being composed
of plural relatively adjustable parts or cooperating in a different
manner with a controlled port to vary the fluid handling capacity
of the distributor for one complete cycle of motor operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 336 | Speed controlled: | ||||
| This subclass is indented under subclass 335. Apparatus in which a means sensing a speed condition of
the motor comprises a means to directly operate the (1) valve to
vary inlet or exhaust or (2) means to adjust the distributor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 337 | With means independent of distributor reversing parts to cyclically hold distributor: |
| This subclass is indented under subclass 218. Apparatus including a means which does not cause cyclic distributor movement but functions to positively hold or hold a distributor part against movement until a predetermined force tending to cause movement is attained, said means being released at least once for each cycle of the motor to permit distributor movement. | |
| 338 | Positive hold (e.g., tripped type, etc.): | ||||||
| This subclass is indented under subclass 337. Apparatus in which the holding means is adapted to positively
hold the distributor regardless of the degree of force applied by
the distributor, it being necessary to remove the holding means
by a means movable relative to the distributor before distributor
reversal may occur.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
| 339 | Oscillating working member: | ||||
| This subclass is indented under subclass 218. Apparatus in which the working member moves back and forth
about an axis to describe an arc of not more than 360 degrees.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
| 340 | Distributor reversed by rotated part: |
| This subclass is indented under subclass 339. Apparatus having a part continuously rotated in a single direction by a working member and a distributor actuated by said part to control the flow of motive fluid for said working member. | |
| 341 | Distributor actuator extends into working chamber: | ||||||
| This subclass is indented under subclass 218. Apparatus in which means transmitting cyclic motion from
the working member to the distributor includes an element which
moves relative to the working member and extends into the working
chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 342 | Axially slidable through working face: | ||
| This subclass is indented under subclass 341. Apparatus in which the means extending into the working
chamber cyclically relatively moves through an opening in a working
face of the working member which comprises a piston.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 343 | Moves laterally relative to working member reciprocatory path: |
| This subclass is indented under subclass 341. Apparatus in which the means extending into the working chamber is given a cyclic movement which is not substantially parallel to the reciprocatory path of movement of the working member. | |
| 344 | Biasing means moves distributor after predetermined travel (i.e., snap action): | ||||
This subclass is indented under subclass 218. Apparatus in which a means adapted to store kinetic energy,
such as a weight or spring, is moved a distance as a consequence
of working member movement to store such energy, followed by the
release of such energy to reverse, or complete the reversal of the
distributor regardless of whether the working member continues to
move or not.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 345 | Distributor moves about axis: | ||||
| This subclass is indented under subclass 344. Apparatus in which the distributor is cyclically moved about
an axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 346 | Spring biased: | ||
This subclass is indented under subclass 344. Apparatus in which the kinetic energy storing means comprises
a spring.
| |||
| 347 | Coil spring moves laterally relative to coil axis: |
| This subclass is indented under subclass 346. Apparatus in which the spring comprises a helical element form of plural spaced coils which are biased parallel to the coil axis, and at least one complete coil of the helix is moved laterally relative to said axis during each cycle. | |
| 348 | Distributor actuator between space piston faces: | ||||||||
| This subclass is indented under subclass 218. Apparatus in which the working member is a piston having
spaced working surfaces and the distributor actuating means includes
a member contacting the working member, movable relative thereto,
and positioned between said working surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 349 | Distributor moves about axis: | ||
| This subclass is indented under subclass 348. Apparatus in which the distributor is cyclically moved about
an axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 350 | Working member reverses distributor through part movable relative to both: | ||
| This subclass is indented under subclass 218. Apparatus in which means transmitting cyclic motion from
the working member to the distributor includes an element moved
relative to both the working member and distributor during each
cycle of operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 351 | Meshing rotary gear: |
| This subclass is indented under subclass 350. Apparatus in which the means transmitting cyclic motion includes a circular or arcuate element provided with peripheral teeth and which is unidirectionally moved about an axis, to cooperate with teeth on another element. | |
| 352 | Distributor moves about axis: | ||||||||||||||
| This subclass is indented under subclass 350. Apparatus in which the distributor is cyclically moved about
an axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||
| 353 | Distributor moves laterally relative to working member reciprocatory path: | ||||||
| This subclass is indented under subclass 350. Apparatus in which the distributor is given a cyclic movement
which is not substantially parallel to the reciprocatory path of
movement of the working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 354 | Rotated part: | ||||||||||
| This subclass is indented under subclass 350. Apparatus in which the relatively moved element is moved
unidirectionally about an axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 355 | CUTOFF AFTER SINGLE COMPLETE CYCLE: | ||||
| This subclass is indented under the class definition. Apparatus in which the working member of the motor operates
from a given position through a forward stroke and a return stroke
to the starting position, the motor having control means which when
operated causes the working member to move through the forward and return
stroke and then stop even though the control means is maintained
in the operated position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 356 | Reversal responsive to motive fluid pressure change: | ||
This subclass is indented under subclass 355. Apparatus in which the working member of the motor is reversed
to operate through the return stroke by means responsive to an increase
or decrease in the pressure of the motive fluid.
| |||
| 357 | SELECTIVELY USABLE OR POSITIONABLE WORKING MEMBER CONTROLLED VENT IN CHAMBER WALL (402): | ||||
This subclass is indented under the class definition. Apparatus in which a nonmovable portion of the working chamber
wall is provided with (1) an outlet opening intermediate the limits
of movement of the working member and means for selectively opening
and closing said outlet opening or (2) an outlet opening the position
of which is adjustable in the direction of working member travel;
said outlet opening acting as a vent for the expanding chamber or an
exhaust for the contracting chamber which is cut off when overrun
by the working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 358 | WORKING MEMBER POSITION FEEDBACK TO MOTIVE FLUID CONTROL: | ||||||
This subclass is indented under the class definition. Apparatus comprising valve means for controlling the flow
of motive fluid, signal input means operated manually or by some separate
control instrumentality for operating said valve means to cause
operation of the motor, the motor providing a feedback signal in
response to the position of the working member thereof, said feedback
signal acting to control or modify the operation of said valve means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 359 | Regenerative or positive feedback type: |
| This subclass is indented under subclass 358. Apparatus comprising feedback signal means which acts on the valve means to cause the working member to increase or continue its movement in the same direction in which it was started by the signal input means. | |
| 360 | With safety means operable upon input signal loss: |
| This subclass is indented under subclass 358. Apparatus in which the system is of the type where upon loss or termination of the input signal the working member would normally move to one extreme of its range of travel, and means are provided which are effective upon loss or termination of said input signal to cause the working member to assume a position intermediate the ends of its range of travel or to prevent movement thereof to an extreme of its range. | |
| 361 | Electrical input and feedback signal means (459): | ||||
This subclass is indented under subclass 358. Apparatus in which the input signal is electrical and the
signal created in response to the position of the working member
operates electrically to modify or control the operation of the valve
means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 362 | Means provides incremental movements (e.g., stepper type, etc.): |
| This subclass is indented under subclass 361. Apparatus comprising a plurality of switch or contact means in the electrical input and feedback circuits corresponding to a plurality of specific increments of the range of movement of the motor working member in one direction such that on making or breaking certain ones of the switches or contacts a definite range of movement or a specific position of the working member will result. | |
| 363 | Follower type: |
| This subclass is indented under subclass 361. Apparatus in which the input and feedback means is of the type in which the motor will move a given amount corresponding to a given magnitude of input signal and the feedback signal means will reset the valve means to stop the motor after said corresponding amount of movement has been obtained. | |
| 364 | With means to vary feedback signal in response to rate of working member movement: | ||||
| This subclass is indented under subclass 358. Apparatus including means responsive to (1) the rate of
movement or (2) the rate of change of movement of the working member
to alter the feedback signal while the working member is in motion
such that the feedback signal at any particular instant does not
represent the true position of the working member at that instant
but a position at some future or past time related to its rate of
movement at that particular instant.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 365 | With main valve position feedback to pilot valve: |
| This subclass is indented under subclass 358. Apparatus in which the valve means is actuated by a fluid pressure operated motor and a secondary or pilot valve is operable to control the flow of pressure fluid to the valve actuating motor, the input signal being applied to the secondary or pilot valve and additional position feedback means being provided from the valve actuating motor to the pilot valve. | |
| 366 | Speed governor controlled input signal (458): | ||
| This subclass is indented under subclass 358. Apparatus in which the input signal for the valve means
is produced by a means which is driven from a rotating shaft and
the signal varies in accordance with the speed at which the rotating
shaft is driven.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 367 | Plural input signal means for single motor valve (453): | ||
| This subclass is indented under subclass 358. Apparatus in which there are a plurality of separate means
for generating an input signal operatively associated with a single
valve means such that the separate signal generating means may actuate
the valve means either separately or simultaneously.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 368 | Follower type: | ||
| This subclass is indented under subclass 358. Apparatus in which the valve means comprises relatively
movable parts whose range of movement to cause actuation of the
working member is limited to a fractional portion of the total input
signal which may be applied and to the total range of movement of
the working member and in which the signal input means and the working
member are so related to the valve means that working member movement
will result only when the input signal means moves and will continue
only as long as the signal input means continues to move; movement
of the working member ceasing when movement of the input signal
means ceases.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 369.1 | With relatively movable working and output members reacting on input member: | ||
This subclass is indented under subclass 368. Apparatus in which there is an output member for transmitting
movement of the working member to a load, the working member being movable
relative to the output member, and in which means are provided to
cause the relative movement between the working members and the
output member to affect the input signal means.
| |||
| 369.2 | Rubber block reaction means: |
| This subclass is indented under subclass 369.1. Apparatus in which the means causing relative movement between the working member and the output member comprises an elastomeric element positioned in a chamber to transmit movement from the output member to the valve means. | |
| 369.3 | And transverse valve key: |
| This subclass is indented under subclass 369.2. Apparatus in which the valve means moves in one direction from rest position to cause movement of the working member, there being provided an element, e.g., key-like element, etc., which engages the valve means or a member connected to the valve means for limiting movement of the valve means in the opposite direction beyond the rest position. | |
| 369.4 | Lever reaction means: |
| This subclass is indented under subclass 369.1. Apparatus in which the means causing relative movement between the working member and the output member comprises at least one lever to transmit movement from the output member or the working member to the valve means. | |
| 370 | With motor chamber pressure reaction on valve: | ||||
This subclass is indented under subclass 368. Apparatus in which the valve means is provided with a means
responsive to fluid pressure, which means is so related to the valve means
and a working chamber of the motor that it exerts a force on the
valve means due to pressure existing in the motor chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 371 | With valve means limiting reaction pressure: |
| This subclass is indented under subclass 370. Apparatus in which an additional valve means is provided for controlling the application of fluid to the means responsive to fluid pressure, said additional valve means also being responsive to fluid pressure of a predetermined magnitude (1) to limit the pressure of the fluid applied to the means responsive to fluid pressure or (2) to change the proportion of the fluid pressure in the working chamber applied to the means responsive to fluid pressure when the working chamber pressure rises above the predetermined magnitude. | |
| 372 | Spring-loaded valve: |
| This subclass is indented under subclass 370. Apparatus in which the valve means has a mechanical spring acting on a movable valve part in such a manner that a given minimum force must be exerted on the valve part to cause its movement. | |
| 373 | With lost motion between input and reaction member: | ||
This subclass is indented under subclass 372. Apparatus in which movable parts of the input signal means
and the means responsive to fluid pressure are operatively connected
to transmit forces to each other during a portion of their operation
and to move relative to each other without transmitting force during
another portion of their operation.
| |||
| 374 | Plural movable valve parts: |
| This subclass is indented under subclass 368. Apparatus in which the valve means has a plurality of (movable) parts movable to perform a valving function, which are moved relative to one another to control the flow of motive fluid, one of said valve parts being moved by the input signal means to cause movement of the working member and another of said movable parts being operated in response to movement of the working member to stop the working member. | |
| 375 | Valve part moves about an axis: |
| This subclass is indented under subclass 374. Apparatus in which at least one of the movable valve parts oscillates or rotates about an axis relative to another valve part to perform a valving function. | |
| 376 | One movable part unitary with working member: | ||
| This subclass is indented under subclass 374. Apparatus in which one of the movable valve parts is rigid
with the working member so as to move as a unit therewith without
any relative motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 377 | Lost motion linkage connecting valve, load and working member: |
| This subclass is indented under subclass 376. Apparatus in which the movable valve part, the working member and a load receiving member are connected by a linkage to provide a lost motion connection so that there is a limited amount of motion between the parts to cause operation of the valve before the working member actuates the load. | |
| 378 | Axially movable spool-type valve: |
| This subclass is indented under subclass 376. Apparatus in which the movable valve parts comprise a ported sleeve and a spool mounted within the sleeve, said sleeve and spool being both movable along the axis thereof to control the flow of motive fluid. | |
| 379 | Disproportional rate of response: |
| This subclass is indented under subclass 368. Apparatus in which the motor moves different increments in different parts of its range of movement for the same increment of signal input. | |
| 380 | Screw and follower (e.g., nut, etc.): | ||
This subclass is indented under subclass 368. Apparatus including relatively rotatable screw and follower,
e.g., nut, etc., elements, the follower engaging the thread of the
screw, and the elements being also bodily displaceable as a unit
(either axially or rotatably); the input signal means, the valve
means and the working member being operatively connected to the
elements such that the signal input means will cause operation of
the valve means to initiate movement of the working member by moving a
first one of the elements either by bodily displacement or rotation
relative to the second element while the working member remains stationary;
the operation of the valve means causing movement of the working
member which will cause the second element to move by the other
type of movement than that caused by the input signal means to cause
operation of the valve means to stop movement of the working member
while the input signal means remains stationary.
| |||
| 381 | Differential gearing: |
| This subclass is indented under subclass 368. Apparatus including a train of at least three intermeshing toothed gears, one connected to the signal input means, another connected to the valve means and a third connected to the working member to provide the feedback signal, operation of the signal input connected gear causing operation of the valve means connected gear while the working member connected gear is stationary, and operation of the working member causing operation of the valve connected gear while the signal input connected gear is stationary. | |
| 382 | Cam and follower: | ||||
This subclass is indented under subclass 368. Apparatus including cam and cam follower elements which
are movable relative to each other to cause a camming action and
also to cause relative movement without a camming action, i.e.,
a noncamming movement, the input signal means, the valve means and
the working member being operatively connected to the elements such
that the input signal means will cause operation of the valve means
to initiate movement of the working member by moving a first one
of the elements relative to the second by either a camming movement
or a noncamming movement while the working member remains stationary;
the operation of the valve means causing movement of the working
member which will cause the second element to move relative to the
first element by a movement of the other type than that caused by
the input signal means to cause operation of the valve means to
stop movement of the working member while the input signal means
remains stationary.
| |||||
| 383 | Cable: |
| This subclass is indented under subclass 368. Apparatus including a flexible means such as cable rope, chain, etc., connected to the signal input means, the valve means and the working member such that the signal input means will cause movement of the flexible means to operate the valve means to cause movement of the working member; the flexible means being moved by the working member to operate the valve means to stop movement of the working member. | |
| 384 | Floating link: |
| This subclass is indented under subclass 368. Apparatus including a control link having three axially spaced connecting points, one of said connecting points being connected to the valve means, the second to the input signal means and the third to the working member so that movement of said input signal means will move said valve means through said link and movement of the working member will reposition the valve through said link. | |
| 385 | Bias-type input and feedback signal means: |
| This subclass is indented under subclass 358. Apparatus in which the signal provided by the input signal means is a variable force acting on the valve means and the working member position signal is generated by means which provides a variable force acting on the valve means in opposition to the input signal force and which force is greater the greater the deviation of the working member from a given position. | |
| 386 | Feedback bias means adjustable: |
| This subclass is indented under subclass 385. Apparatus in which the means for generating the working member position signal is adjustable to change the amount of force exerted against the valve means for a given position of the working member. | |
| 387 | Spring-type feedback bias means: |
| This subclass is indented under subclass 385. Apparatus in which the working member position signal is generated by a resilient material which is variably stressed by the position of the working member. | |
| 388 | Fluid operated: | ||||||||
This subclass is indented under subclass 358. Apparatus in which means responsive to fluid pressure is
connected to operate or modify the operation of the valve means
by fluid pressure variations created in response to the position
of the working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 389 | Adjustable: | ||||
| This subclass is indented under subclass 358. Apparatus in which the signal is provided in response to
the working member reaching a given position, the position of the
working member at which the signal is provided being selectively
changeable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 390 | POSITION MAINTAINING TYPE: | ||||
This subclass is indented under the class definition. Apparatus comprising means responsive to the movement or
the tendency to move of the working member to control the motive
fluid so as to restore the working member to its original position
or to provide a force counteracting the force tending to move the
working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 391 | WITH ALTERNATIVE MANUAL ACTUATION OF LOAD: | ||||
This subclass is indented under the class definition. Apparatus having means for moving the load normally driven
by the working member by a human operator in the absence of operation
of the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 392 | WORKING MEMBER POSITION RESPONSIVE MOTIVE FLUID CONTROL: | ||||||||||||||||||||||
This subclass is indented under the class definition. Apparatus in which the flow of motive fluid to or from a
working chamber or within a working chamber is modified so as to
alter the motor operation in response to the working member of the
motor attaining a given position in the working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||
| 393 | Position initiated timing or delay means: | ||||||||
This subclass is indented under subclass 392. Apparatus in which in response to the position of the working
member means are actuated which cause a predetermined delay or time
to elapse prior to control of the motive fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 394 | Working member carries part within working chamber which controls port in chamber end wall: |
| This subclass is indented under subclass 392. Apparatus in which the working member of the motor has attached thereto or formed as a part thereof a part which directly cooperates with an inlet or exhaust opening in the working chamber end wall to control motive fluid flow through said opening in response to position of said working member, said part being disposed within the working chamber in at least one position of the motor. | |
| 395 | Part movable with respect to working member: |
| This subclass is indented under subclass 394. Apparatus in which the part attached to the working member moves relative to the working member incident to the control of said end wall opening. | |
| 396 | Part forms throttle member: |
| This subclass is indented under subclass 394. Apparatus in which the part carried by the working member is smaller than said opening so as not to completely close the opening or is of tapering or irregular shape so as to progressively or irregularly close or open said opening on continued movement of said part. | |
| 397 | Alternate control of inlet and exhaust for same chamber at opposite ends of stroke: |
| This subclass is indented under subclass 392. Apparatus in which the working member has reciprocating motion and wherein at substantially the limit of the stroke in one direction the motive fluid being admitted to a working chamber is controlled in response to working member position and at substantially the limit of the stroke in the opposite direction the motive fluid being exhausted from the same working chamber is controlled in response to working member position. | |
| 398 | Simultaneous control of inlet and exhaust of same chamber: | ||
| This subclass is indented under subclass 392. Apparatus in which both a flow path for motive fluid entering
and a flow path for motive fluid exhausting from a single working
chamber are substantially concurrently controlled in response to
working member position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 399 | Bypassing between expanding chamber and closed or throttled contracting chamber (e.g., cushioning, etc.) (23): | ||||||||
This subclass is indented under subclass 392. Apparatus wherein the motor is provided with opposed expansible
chambers, i.e., one of which contracts as the other expands and
vice versa, and in which in response to motor position a passage
interconnecting the two chambers is opened and at that time the
contracting chamber is otherwise closed or the outlet therefrom
is otherwise restricted.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 400 | Venting expanding chamber: | ||||||
This subclass is indented under subclass 392. Apparatus in which in response to motor position a working
chamber of the motor which is increasing in size is opened to exhaust
so as to vent motive fluid therefrom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 401 | Through working member: | ||
| This subclass is indented under subclass 400. Apparatus in which the motive fluid is vented through a
passage in the working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 402 | Working member overrides exhaust port (357): | ||||
| This subclass is indented under subclass 400. Apparatus in which the working member travels past an exhaust
port to permit the motive fluid in the expanding chamber to exhaust therethrough.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 403 | Position controls actuating fluid for valve: | ||||
| This subclass is indented under subclass 392. Apparatus comprising a control valve which is actuated by
fluid, said fluid being controlled by the position of the motor
working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 404 | Exhaust control: | ||||||
| This subclass is indented under subclass 392. Apparatus comprising control of the motive fluid as it leaves
the working chamber of the motor in response to working member position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 405 | Throttling (e.g., cushioning, etc.): | ||||
This subclass is indented under subclass 404. Apparatus in which the exhaust is only partially closed
in response to working member position or is progressively closed
or throttled due to movement of the working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 406 | Exhaust valve with bleed passage therein: |
| This subclass is indented under subclass 405. Apparatus in which the exhaust is controlled by a separate valve, the movable part of said valve having a relatively small passage therein to permit limited exhaust from the working chamber after said movable part has been moved to closed position in response to working member position. | |
| 407 | By successively controlling or controlling less than all of plural exhaust passages: | ||||
| This subclass is indented under subclass 405. Apparatus in which there is provided a plurality of exhaust
flow paths from the working chamber and (1) said flow paths being
closed in series in response to movement of the motor working member,
or (2) at least one of said exhaust flow paths is not controlled
in response to working member position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 408 | Working member covers exhaust port (409): | ||
| This subclass is indented under subclass 407. Apparatus in which the working member covers an exhaust
port located in a wall of the working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 409 | Working member covers exhaust port in contracting chamber (408): | ||
| This subclass is indented under subclass 404. Apparatus in which the expansible chamber exhausts through
a port which is so located as to be covered by the working member
during contraction of the expansible chamber to prevent further
exhaust therethrough.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 410 | Working member controls relatively movable inlet valve: | ||
| This subclass is indented under subclass 392. Apparatus wherein a valve which has a controlling part movable
with respect to the working member is controlled in response to
working member position to control the inlet of motive fluid to
an expanding working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 415 | DIFFERENTIAL: | ||||||||||||||||
This subclass is indented under the class definition. Apparatus in which the motor is provided with opposed working
member faces, motive fluid being applied to or evacuated from one
of said faces to cause the working member to move in one direction
and being applied simultaneously to or evacuated simultaneously
from both of said faces to cause the working member to move in the
opposite direction or to slow the movement in said one direction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||
| 416 | Opposing pressure applied by bypassing: | ||||||||
| This subclass is indented under subclass 415. Apparatus in which the motive fluid which acts in one of
the expansible chambers is supplied directly thereto from the other
expansible chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 417 | Motive fluid constantly applied to one working member face (235) (321): | ||
| This subclass is indented under subclass 415. Apparatus in which motive fluid is applied to one working
face of the motor under all conditions of operation of the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 418 | WITH MOTIVE FLUID VALVE: | ||||||||||||
This subclass is indented under the class definition. Apparatus including valve means to control the flow of motive
fluid to or from the motor or while in the motor so as to provide
a control of the motor.
| |||||||||||||
| 419 | Responsive to (1) motive fluid temperature or state, or (2) motor position or orientation: |
| This subclass is indented under subclass 418. Apparatus in which the valve means is controlled in response to (1) changes in the temperature or the physical state of the motive fluid supplied to or exhausted from the motor or (2) changes in the position of the motor relative to a support or relative to a predetermined spatial reference, such as a line, plane or direction. | |
| 420 | Contracting chamber exhaust valve controlled by expanding chamber pressure or flow: | ||||||
This subclass is indented under subclass 418. Apparatus in which the motor has a first chamber which is
expanded by pressure motive fluid acting therein and a second chamber
which is contracted and from which motive fluid is exhausted due
to the expansion of the first chamber, the exhaust from the contracting chamber
being controlled by valve means which is operated by the pressure
of motive fluid in or the flow of motive fluid to said expanding
chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 421 | Expanding chamber inlet controlled by contracting chamber pressure or flow: | ||
This subclass is indented under subclass 418. Apparatus in which the motor is provided with a first chamber
which is expanded by pressure motive fluid acting therein and a
second chamber which is contracted and from which motive fluid is
exhausted due to the expansion of said first chamber, the flow of
motive fluid into the expanding chamber being controlled by valve means
which is responsive to the motive fluid pressure in or flow from
said contracting chamber.
| |||
| 422 | Valved piston (222): | ||||||||||||
| This subclass is indented under subclass 418. Apparatus in which the movable valve means is in or carried
by a piston or piston rod of the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
| 423 | Valve part forms traversed movable portion of working chamber wall (276): | ||||
| This subclass is indented under subclass 418. Apparatus in which a part of the working chamber wall which
is traversed by the working member is movable and forms or carries
a part forming a portion of the motive fluid valve means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
| 424 | Two hand control: |
| This subclass is indented under subclass 418. Apparatus in which operation of the valve means requires the use of both hands of a human operator. | |
| 425 | With motor-controlled holding means for valve: | ||||||
| This subclass is indented under subclass 424. Apparatus including means responsive to an operating condition
of the motor for permitting the motor to continue to operate upon
release of either or both hands of the operator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 426 | With fluid pressure holding means for valve: | ||||||
| This subclass is indented under subclass 418. Apparatus including means to actuate the valve means to
a given position and separate means to hold the valve means in said
position by the application of fluid pressure to the separate means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 427 | Plural manual control stations: | ||||
This subclass is indented under subclass 418. Apparatus comprising a plurality of spaced control stations
from which the motor may be alternatively controlled by a human
operator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 428 | Manual control carried on or operated from load or output element: | ||
| This subclass is indented under subclass 418. Apparatus in which the valve means is manually operable
by means carried on and movable with the working member or load
or which is positioned to be operable by a human operator carried
on and movable with the working member or load.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 429 | Dither valve: | ||||
| This subclass is indented under subclass 418. Apparatus in which the valve means is so actuated as to
provide motive fluid to the motor in a series of pressure impulses
rather than in a steady continuous flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 430 | Valve parts continuously relatively moved for nonvalving function: | ||||
This subclass is indented under subclass 418. Apparatus in which the valve means has parts which are relatively
movable for a nonvalving function and means are provided to cause
the parts to be moved continuously.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 431 | Continuous motive fluid flow through chamber in motor idle condition: | ||||
| This subclass is indented under subclass 418. Apparatus in which the valve means is so constructed as
to provide for a circulating flow of motive fluid into and out of
the motor working chamber while the motor working member is stationary.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 432 | Inlet check valve with means for disconnectable supply line (468): | ||
| This subclass is indented under subclass 418. Apparatus in which the valve means comprises a check valve
which is operable to permit motive fluid to flow into the working
chamber, the check valve having connecting means combined therewith
to provide for the reception of a readily disconnectable or removable
motive fluid supply line to the motor through said check valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 433 | Both inlet and exhaust controlled by motive fluid pressure in supply line or chamber: | ||||||||||||||||
This subclass is indented under subclass 418. Apparatus in which the valve means controls both the inlet
and the exhaust to initiate flow of motive fluid to and from a single
working chamber of the motor and the valve means is operated in
response to variations in the pressure in either the pressure line
supplying motive fluid to the motor or the working chamber or the
motor itself to control both the inlet and exhaust of motive fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||
| 434 | With manual valve actuating means responsive to motive fluid pressure (e.g., "feel", etc.): | ||
| This subclass is indented under subclass 433. Apparatus in which the valve means is provided with manual
actuating means, the variations in pressure being applied to said
manual actuating means to provide a reaction or "feel" to
the operator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 435 | Controlled by rate of movement of working member: | ||||||||||||||||||||
This subclass is indented under subclass 418. Apparatus in which the valve means is controlled in response
to the speed of movement of the working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
| 436 | Inlet fluid supplemented by controlled fluid pressurized in opposed contracting chamber: | ||
| This subclass is indented under subclass 418. Apparatus in which the motor is provided with opposed chambers
such that the introduction of pressure motive fluid into one chamber
will cause expansion thereof, movement of the working member, and
contraction of the opposed chamber to exert a pressure on fluid contained
therein, the valve means being operable to permit fluid which has
been put under pressure in the contracting chamber to be admitted
to the expanding chamber during at least a portion of the period
pressure motive fluid is also being admitted to the expanding chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 437 | Independent control of bypass between opposed working chambers: | ||||||
This subclass is indented under subclass 418. Apparatus in which the motor comprises a pair of working
chambers for driving a single working member in opposite directions
by the application of controlled pressure motive fluid to expand
one chamber and to contract and expel exhaust motive fluid from
the other chamber and in which the valve means controls a fluid line
connecting the chambers to permit motive fluid to pass from one
chamber to the other, said valve means operating separately from
the control of the pressure motive fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 438 | Held closed by motive fluid pressure: |
| This subclass is indented under subclass 437. Apparatus in which the valve means controlling the by-pass is held in position to close the by-pass by the pressure of motive fluid applied to the motor. | |
| 439 | Bypass through supply line: |
| This subclass is indented under subclass 438. Apparatus in which the pressure motive fluid applied to the motor is controlled by a valve means having an inlet line common to the opposed chambers for the pressure motive fluid and in which the by-pass line is formed in part by said inlet line so that fluid may flow from one chamber to the other through the inlet line independently of the position of the pressure motive fluid control valve means. | |
| 440 | For exhausting contracting working chamber to expanding opposed nonworking: |
| This subclass is indented under subclass 418. Apparatus in which the motor includes a nonworking chamber and the valve means acts to exhaust motive fluid from the contracting working chamber to the nonworking chamber which is expanded due to the movement of the working member contracting the working chamber. | |
| 441 | With ambient fluid inlet valve to expanding working chamber: | ||||
This subclass is indented under subclass 418. Apparatus in which the motor is provided with an additional
valve means which opens to admit ambient fluid into an expanding
chamber when the pressure in the chamber falls below the pressure
of the ambient fluid source.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 442 | Self-opening exhaust valve held closed by inlet pressure (268): | ||
| This subclass is indented under subclass 418. Apparatus in which an expansible chamber is provided with
a valve to discharge motive fluid therefrom, said valve being held
closed by the pressure of inlet motive fluid applied to said chamber
and said valve opening automatically to permit discharge when the
inlet pressure is removed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 443 | To provide unequal inlet and exhaust flow rates to single working chamber: | ||||
This subclass is indented under subclass 418. Apparatus in which the valve means controls the inlet and
exhaust flow of motive fluid to and from the same working chamber
to cause the magnitude of the inlet flow and exhaust flow to be
unequal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 444 | Relatively movable serial valves: | ||||||||||||||
| This subclass is indented under subclass 418. Apparatus in which the valve means comprises at least two
valves through which the fluid must pass serially in the course
of flowing either to the working chamber or exhausting from the
working chamber, each valve having a movable fluid flow controlling
element so arranged that the control of the motive fluid by the
valves is effected by the movement of the movable element of one
valve relative to the movable element of another valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||
| 445 | Stop valve between working chamber and inlet and exhaust valve: |
| This subclass is indented under subclass 444. Apparatus in which one of the serial valves is an inlet and exhaust valve and another is a stop valve, the stop valve being disposed in the motor line between the inlet and exhaust valve and the working chamber. | |
| 446 | Including motive fluid pressure or flow responsive valve (468): | ||
| This subclass is indented under subclass 444. Apparatus in which one of the serial valves acts in response
to pressure or flow in the line in which said one valve is placed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 447 | Between working chamber and inlet and exhaust valve: |
| This subclass is indented under subclass 446. Apparatus in which another of the serial valves is an inlet and exhaust valve and the pressure or flow responsive valve is disposed in the motor line between the inlet and exhaust valve and the working chamber. | |
| 448 | In supply path: |
| This subclass is indented under subclass 444. Apparatus in which the serially arranged valves are located in the fluid line supplying motive fluid to the motor. | |
| 449 | Plural separately controlled waste passages for single working chamber: | ||||||||
This subclass is indented under subclass 418. Apparatus in which the same working chamber of the motor
is provided with at least two waste passages through which motive
fluid may be diverted or exhausted from the chamber and the valve
means is operable to control these passages separately of one another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 450 | One passage controlled by inlet and exhaust valve: |
| This subclass is indented under subclass 449. Apparatus in which the valve means controlling one of the passages is an inlet and exhaust valve. | |
| 451 | Another passage controlled by motive fluid pressure or flow responsive valve (468): | ||||||
| This subclass is indented under subclass 450. Apparatus in which the valve means controlling a second
passage is a self acting valve operated in response to the motive
fluid pressure or rate of flow in the chamber or motive fluid lines.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 452 | One passage controlled by motive fluid pressure or flow-responsive valve (468): | ||||||
| This subclass is indented under subclass 449. Apparatus in which the valve means controlling one of the
passages is a self acting valve operated in response to the motive
fluid pressure or rate of flow in the chamber or motive fluid lines.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 453 | Plural actuators for single valve means (367): | ||||||
This subclass is indented under subclass 418. Apparatus in which a single valve means is provided with
two or more separate means to cause operation of the valve means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 454 | Relatively movable inlet and exhaust valves for single working chamber: | ||
| This subclass is indented under subclass 418. Apparatus in which the valve means comprises two valves,
each having a movable flow controlling part, one of the valves controlling
the pressure line to a working chamber and the other controlling
the exhaust line from the same chamber, at least one of the valves
controlling its respective line by movement of its movable valve
part relative to the movable valve part of the other valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 455 | One valve forms unitary part of valve controlling opposed working chamber: |
| This subclass is indented under subclass 454. Apparatus in which said two valves control the inlet and exhaust of one working chamber of a double acting motor and the movable flow controlling part of one of the valves moves as a unit with another movable flow controlling part of a valve which controls the flow of motive fluid to or from the other working chamber of the double acting motor. | |
| 456 | One valve moves about an axis: | ||
| This subclass is indented under subclass 454. Apparatus in which the movable flow controlling part of
at least one of said two valves oscillates or rotates about a fixed
axis to perform its valving function.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 457 | Single actuating means moves both valves: | ||
| This subclass is indented under subclass 454. Apparatus in which a single movable actuating member or
element is operatively associated with said two valves so that the
movable flow controlling parts of both valves are capable of being
moved by the member or element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 458 | Speed governor operated (366): | ||||
| This subclass is indented under subclass 418. Apparatus in which the valve means is actuated by a means
which is driven from a rotating shaft and the actuation of the valve
means varies in accordance with the speed at which the rotating
shaft is driven.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 459 | Electrically operated (275) (361): | ||||||||
| This subclass is indented under subclass 418. Apparatus in which the valve means includes a movable part
which is caused to move by a means operated by an electrical current
to effect control of the motive fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 460 | Pulsator actuator for valve (280): | ||
| This subclass is indented under subclass 418. Apparatus in which the valve means is operated by a substantially
constant mass of fluid forming a fluid link between a valve actuating surface
and an actuated surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 461 | Pilot valve (304): | ||
| This subclass is indented under subclass 418. Apparatus in which the valve means comprises a main or primary
valve which is movable by fluid under pressure to control the flow
of motive fluid to or from the motor and a secondary or pilot valve
operable to control the application of pressure fluid to the main
valve, or a fluid actuator therefor, so as to control movement of
said main valve, said fluid under pressure being separate or separated
from the motive fluid controlled by the main or primary valve and
not entering the working chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 462 | For double-acting motor: | ||||||||||
| This subclass is indented under subclass 418. Apparatus in which the motor has a working member positioned
to move in opposite directions in opposed working chambers by alternate
supply of motive fluid to one side of the piston and the alternate
exhaust from the other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 463 | With means to provide unequal flow rates to or from opposed working chambers: | ||||
| This subclass is indented under subclass 462. Apparatus in which the flow capacity of the motive fluid
flow line to one working chamber is different from the flow capacity
of the motive fluid flow line to an opposed working chamber, or
the flow capacity of the motive fluid flow line from one working
chamber is different from the flow capacity of the motive fluid
flow line from an opposed working chambers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 464 | Means to simultaneously open working chambers to inlet or exhaust: | ||||||
This subclass is indented under subclass 462. Apparatus in which valve means are provided for concurrently
opening the opposed working chambers of the double acting motor
to either inlet or exhaust.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 465 | Relatively movable unitary inlet and exhaust valves for opposed working chambers: | ||
| This subclass is indented under subclass 462. Apparatus in which the valve means comprises two unitary
inlet and exhaust valves, each controlling the flow of motive fluid
to and from its respective opposed working chamber, the control
of motive fluid for each working chamber being effected by the relative
movement of the unitary movable elements of the valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 466 | Unitary inlet and exhaust valve means for opposed working chambers: | ||
This subclass is indented under subclass 462. Apparatus in which the inlet and exhaust for the opposed
chambers is controlled by a single unitary movable valve means having
no relatively movable parts for the valving function.
| |||
| 467 | Valve means moves about an axis: | ||
| This subclass is indented under subclass 466. Apparatus in which the valve means oscillates or rotates
about a fixed axis to perform the valving function.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 468 | Self-acting valve (432) (446) (451) (452): | ||||||||||||||||||||||||
| This subclass is indented under subclass 418. Apparatus in which the valve means comprises a valve in
a line which operates in response to motive fluid pressure, rate
of flow, or direction of flow in the line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||||||||||
| 469 | Unitary inlet and exhaust valve for single working chamber: | ||||
| This subclass is indented under subclass 418. Apparatus in which the valve means comprises a unitary inlet
and exhaust valve for controlling the motive fluid flow for a single
working chamber having no relatively movable parts for the valving
function.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 470 | Valve moves about an axis: | ||
| This subclass is indented under subclass 469. Apparatus in which the inlet and exhaust valve oscillates
or rotates about a fixed axis to perform the valving function.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 471 | MISCELLANEOUS (E.G., METHODS, ETC.): | ||
This subclass is indented under the class definition. Subject matter not otherwise provided for.
| |||
| 472 | THREE OR MORE CYLINDERS ARRANGED IN PARALLEL RADIAL OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS: | ||||||||||||||||
This subclass is indented under the class definition. Apparatus comprising three or more cylinders each cylinder
being provided with a relatively reciprocating piston (includes diaphragm)
to thereby form a plurality of working chambers, the cylinders or
a transmission element in common operative engagement with said
cylinders or pistons being adapted to rotate about a fixed axis;
said cylinders being physically arranged in a manner such that their longitudinal
axes either (1) intersect at a common point or (2) extend parallel
to said axis of rotation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
| 473 | Condition responsive control of drive transmission: | ||
| This subclass is indented under subclass 472. Apparatus in which there is provided (1) drive means for
converting the relative reciprocatory motion between said plural
cylinders and pistons into rotary motion of a driven member, (2) control
means for controlling the drive means in some manner and (3) a separate
sensing means which is responsive to the occurrence of a condition
of either the motor or motive fluid to effect operation of the control
means for altering the operation of the drive means.
SEE OR SEARCH CLASS:
| |||
| 474 | Separate fluid supply or discharge paths: |
| This subclass is indented under subclass 472. Apparatus in which at least one of said plural working chambers either (1) discharges motive fluid to an external destination separate from that to which another of said expansible chambers discharges fluid or (2) receives motive fluid from an external source separate from that from which another of said expansible chambers receives fluid. | |
| 475 | Having yieldable drive transmission: | ||
| This subclass is indented under subclass 472. Apparatus in which there is provided a reaction member in
common operative engagement with said plural piston or cylinders
for converting the relative reciprocatory motion between the pistons
and cylinders to or from continuous rotary motion of a drive element,
there being provided resilient means for biasing said reaction member
to a position causing said motion conversion, said reaction member
being directly responsive to fluid pressure within the plural expansible
chambers for movement in opposition to the resilient bias thereon
for varying the extent of relative reciprocation between said piston
and cylinders.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 476 | Separate motive fluid control for each working chamber: | ||
This subclass is indented under subclass 472. Apparatus in which there is provided individual valve means
for each for said working chambers to cyclically control the flow
of motive fluid to or from the chamber, each of said valve means
being movable relative to another and each controlling the motive
fluid for a single chamber without effecting motive fluid control
for any other chamber.
| |||
| 477 | Each piston acts as valve for different working chamber: | ||
This subclass is indented under subclass 476. Apparatus in which the cylinders contain pistons which reciprocate
relative thereto to form the working chambers, each piston acting
as a valve to control the flow of motive fluid to or from a working
chamber other than the working chamber of which that piston forms
a part.
| |||
| 478 | Means varies cyclic relation between reciprocating member and control valve therefor: |
| This subclass is indented under subclass 476. Apparatus in which there is provided means for enabling the selective adjustment of the time of occurrence of admission or discharge of motive fluid to or from at least one of said plural working chambers relative to the reciprocatory movement cycle of the relatively reciprocating piston and cylinder forming said chamber. | |
| 479 | Control by moving cylinder or liner: | ||
This subclass is indented under subclass 476. Apparatus in which, incident to the operation of the device,
the cylinders also have absolute individual movement, e.g., rocking,
etc., the individual movement of the cylinders controlling porting
to control the flow of motive fluid to or from the working chambers.
| |||
| 480 | Mechanically actuated valves: |
| This subclass is indented under subclass 476. Apparatus in which the individual valve means comprises a valve movable with respect to both the cylinder and relatively reciprocating piston therein, said valve being cyclically shifted by mechanical means incident to the operation of the device. | |
| 481 | Radial cylinders: |
| This subclass is indented under subclass 480. Apparatus in which the longitudinal axes of said plural cylinders intersect at a common point from which they radiate and are contained within a common plane perpendicular to said axis of rotation. | |
| 482 | Means varies cyclic relation between reciprocating member and control valve therefor: | ||||||
This subclass is indented under subclass 472. Apparatus having valve means for controlling the admission
or discharge of motive fluid to or from said plural working chambers,
there being provided means for enabling the selective adjustment
of the time of occurrence of admission or discharge of fluid to
or from at least one of said plural working chambers relative to
the reciprocating movement cycle of the relatively reciprocating
piston and cylinder forming said chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 483 | By adjustment of transmission or reaction element: |
| This subclass is indented under subclass 482. Apparatus having a transmission or reaction element, e.g., swash-plate, crankshaft, etc., which is mechanically connected (includes abutment-type connection) to the cylinders or relatively reciprocating pistons and which is adapted to be selectively moved and held in different positions for the purpose of changing the time of occurrence of admission or discharge of fluid to or from at least one of said working chambers. | |
| 484 | Control valve seating surface contact maintained by fluid pressure bias: |
| This subclass is indented under subclass 472. Apparatus in which there is provided a valve having a pair of relatively slidable abutting face portions, relative sliding movement of said face portions serving to control admission or discharge of fluid to or from said working chambers, and valve face portions being biased into relative seating engagement by fluid actuated means which is either (1) located externally of said plural working chambers or (2) if located within a working chamber being mounted for movement relative to both the piston and cylinder forming said working chamber. | |
| 485 | Disc valve: |
| This subclass is indented under subclass 484. Apparatus in which said pair of relatively slidable valve face portions are substantially flat and abut in a common plane, one of said face portions being mounted for movement relative to the other. | |
| 486 | Motive fluid bypass to or from assembly: | ||
| This subclass is indented under subclass 472. Apparatus including means to conduct a portion of the motive
fluid to or from a part of the motor assembly to assist said part
in performing its intended function, e.g., lubricating, sealing,
thrust balancing, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 487 | Separate passage directs motive fluid to or from valve interface: |
| This subclass is indented under subclass 486. Apparatus in which there is provided valve means comprising plural relatively movable elements having interengaging face portions for controlling admission or discharge of motive fluid to or from said plural working chambers, at least one of said valve elements being provided with passage means for conducting motive fluid to or from the interface formed by said interengaging face portions, said passage means at no time serving to effect control of admission or discharge of motive fluid to or from said working chambers. | |
| 488 | Fluid conducting passage disposed within piston: |
| This subclass is indented under subclass 486. Apparatus in which motive fluid is conducted to or from the motor assembly by means of a fluid conducting passage which is physically located within one of said plural pistons. | |
| 489 | Valved: |
| This subclass is indented under subclass 486. Apparatus in which there is provided valve means in addition to that controlling motive fluid admission or discharge to or from said plural working chambers for controlling the flow of motive fluid to or from said motor assembly. | |
| 490 | Motive fluid supply or discharge through piston: |
| This subclass is indented under subclass 472. Apparatus in which there is provided passage means formed within at least one of said plural pistons and extending therethrough for the purpose of providing communication between the expansible chamber associated with said piston and a source of motive fluid supply or discharge. | |
| 491 | Radially disposed cylinders: | ||||||||||
This subclass is indented under subclass 472. Apparatus in which the longitudinal axes of said plural
cylinders intersect at a common point from which they radiate and
are contained within a common plane perpendicular to said axis of
rotation.
SEE OR SEARCH CLASS:
| |||||||||||
| 492 | Plural banks: |
| This subclass is indented under subclass 491. Apparatus comprising more than one group of plural radiating cylinders and in which either (1) the longitudinal cylinder axes of one group of plural cylinders are contained longitudinal axes of another group or (2) the rotation axis of one group is spaced from the rotation axis of another. | |
| 493 | Rigidly connected pistons reciprocate within rigidly connected cylinders: |
| This subclass is indented under subclass 491. Apparatus having plural rigidly interconnected cylinders, the piston associated with one of said rigid cylinders being interconnected for unitary movement with the piston associated with another of said rigid cylinders. | |
| 494 | Cylinders and pistons form or coact with respective common elements having limited relative rotary movement: | ||
This subclass is indented under subclass 491. Apparatus in which said plural cylinders form or are connected
to or coact with a first common element and said plural pistons
form or are connected to or coact with a second common element in
a manner such that relative rotary motion between said first and
second common elements is positively constrained to less than 360°.
| |||
| 495 | Cylinders or pistons pinned to common element: |
| This subclass is indented under subclass 494. Apparatus in which either the plural cylinders or pistons are connected to their respective common element by means including a pivoted connection, and move about said pivoted connection incident to the limited relative rotation of said elements. | |
| 496 | Positive bidirectional drive or reciprocating members: | ||||
| This subclass is indented under subclass 491. Apparatus in which the plural cylinders or pistons coact
with drive transmission means, e.g., crank shaft, gear, grooved
cam track, etc., for converting relative reciprocatory movement
of said cylinders and pistons to or from rotary motion of said cylinders
or transmission means, said cylinders or pistons co-acting with said
drive transmission means in a manner such that positive mechanical
force transmission is provided therebetween during both directions, i.e.,
to-and-fro, of reciprocatory movement of said cylinders or pistons.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 497 | Stroke control: | ||||
| This subclass is indented under subclass 491. Apparatus in which there is provided means to selectively
vary the length of the reciprocating stroke between said cylinders
and their respective relatively reciprocating pistons.
SEE OR SEARCH CLASS:
| |||||
| 498 | Cooperating valve ports in cylinder and relatively movable central member: |
| This subclass is indented under subclass 491. Apparatus in which there is provided a centrally located substantially cylindrically or conically shaped member having an axis from which the plural longitudinal cylinder axes radiate, said central member being provided with at least one motive fluid conveying passage terminating on the peripheral surface thereof, the central member and said plural cylinders being mounted for relative rotary movement and individual port means in continuous communication with each of said plural cylinders and cyclically communicable with the terminal portion of said motive fluid conveying passage as a result of said relative rotary movement. | |
| 499 | Cylinders parallel to rotation axis: | ||||||||
| This subclass is indented under subclass 472. Apparatus in which the longitudinal axes of said plural
cylinders are parallel to and spaced from said axis of rotation.
SEE OR SEARCH CLASS:
| |||||||||
| 500 | Plural angularly disposed cylinder banks: |
| This subclass is indented under subclass 499. Apparatus in which said plural parallel cylinders are angularly disposed relative to a second set of plural cylinders having parallel longitudinal axes. | |
| 501 | Cylinders contain plural oppositely movable pistons: | ||
| This subclass is indented under subclass 499. Apparatus in which each of said plural cylinders define
a single working chamber containing plural piston forming opposite
walls thereof, said pistons being movable toward and away from each
other during contraction and expansion of the working chamber.
SEE OR SEARCH CLASS:
| |||
| 502 | Including plural axially spaced working chambers (e.g., double-acting working members, etc.): |
| This subclass is indented under subclass 499. Apparatus in which at least one of said plural parallel cylinders is either (1) axially longitudinally spaced relative to another or (2) provided with a piston which divides same into a pair of spaced opposed expansible working chambers. | |
| 503 | Rotary spool valve: |
| This subclass is indented under subclass 499. Apparatus in which there is provided a valve comprising a pair of cylindrical parts one rotating with respect to and operating within the other, the axis of rotation of the valve part coinciding with said fixed axis, the relative rotary movement between the valve parts serving to cyclically control admission or discharge of motive fluid to or from the plural expansible chambers. | |
| 504 | Stroke control: | ||||
| This subclass is indented under subclass 499. Apparatus in which there is provided means to selectively
vary the length of the reciprocating stroke between said cylinders
and their respective relatively reciprocating pistons.
SEE OR SEARCH CLASS:
| |||||
| 505 | By varying reaction plate inclination relative to cylinder axes: | ||
| This subclass is indented under subclass 504. Apparatus in which the plural cylinders or pistons coact
with a common drive transmission element, e.g., swashplate, etc.,
for converting relative reciprocatory movement of said cylinders
and pistons to or from rotary motion of said cylinders or said transmission
element, said transmission element, being selectively angularly
adjustable relative to said parallel cylinder axes for varying the
reciprocatory stroke length between said cylinders and pistons.
SEE OR SEARCH CLASS:
| |||
| 506 | Motor operated: | ||
| This subclass is indented under subclass 505. Apparatus in which the transmission element is angularly
adjusted by means of a motor.
SEE OR SEARCH CLASS:
| |||
| 507 | Positive bidirectional drive of reciprocating members: | ||
| This subclass is indented under subclass 499. Apparatus in which the plural cylinders or pistons coact
with drive transmission means, e.g., swashplate, interconnecting
linkage, etc., for converting relative reciprocatory movement of said
cylinders and pistons to or from rotary motion of said cylinders
or transmission means, said cylinders or pistons co-acting with said
drive transmission means in a manner such that positive mechanical
force transmission is provided therebetween during both directions, i.e.,
to-and-fro, of reciprocatory movement of said cylinders or pistons.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 508 | PLURAL RELATIVELY MOVABLE OR RIGIDLY INTERCONNECTED WORKING MEMBERS: | ||||||||||||||
This subclass is indented under the class definition. Apparatus having plural working members which are either
(a) relatively movable, or (b) connected to move together as a unit
under all conditions of operation and which have different faces
forming moving walls of different working chambers which regardless
of the positions of the different faces are not in fluid communication
during at least some part of the operation of said apparatus, said
faces being urged in the same direction either simultaneously or
sequentially by working fluid in said chambers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
| 509 | Having (1) stand-by or (2) redundant means enabling load to be driven upon failure of primarily load moving means: | ||||||||
This subclass is indented under subclass 508. Apparatus including a (1) stand-by means becoming operative,
or (2) one member of a redundant means remaining operative upon
the inability of at least one working member to drive the load,
(1) the stand-by means enabling the one working member to once again
drive its load, or (2) the stand-by means comprising an auxiliary
working member for taking over the function of the one working member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
| 510 | Stand-by means utilizes an auxiliary motive fluid source for another working member to same load: | ||||
This subclass is indented under subclass 509. Apparatus wherein the stand-by means comprises means to
activate or utilize an auxiliary source of motive fluid for causing
a working member, other than the disabled one, to drive the load
which was previously driven by the disabled working member, i.e.,
redundant system.
| |||||
| 511 | Condition responsive means for modifying working member operation: | ||||||||||||||
This subclass is indented under subclass 508. Apparatus having a means for controlling the operation of
at least one of the working members in response to a sensed condition
external of the motor in which the one working member operates.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||
| 512 | Condition is that of a load driven by a working member other than working member having its operation modified: | ||||||
This subclass is indented under subclass 511. Apparatus wherein the external condition is the condition
of the load driven by one of the working members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 513 | Condition is position of fluid control member of motor other than motor whose operation is modified: |
| This subclass is indented under subclass 511. Apparatus wherein the external condition sensed is the position of the motive fluid control member of a motor other than the one having its operation modified. | |
| 514 | Pressure responsive valve divides motive fluid between motors: | ||
| This subclass is indented under subclass 511. Apparatus including a single fluid pressure or flow responsive
valve for dividing or controlling the inlet fluid between and controlling
a plurality of motors.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 515 | For synchronization of motors: | ||||
| This subclass is indented under subclass 514. Apparatus wherein the fluid pressure or flow responsive
valve comprises (a) means for equalizing fluid pressure or flow
to the plurality of motors, or (b) means for synchronizing the operation
of the plurality of motors.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 516 | To give one motor priority to motive fluid over another: |
| This subclass is indented under subclass 514. Apparatus wherein the fluid pressure or flow responsive valve comprises means for giving supply priority to one of the motors, such that in the absence of sufficient pressure or flow, supply to the one motor will be take precedence over supply to the other motor. | |
| 517 | Condition sensed is working member speed or working fluid pressure of another motor (i.e., fluid pressure or flow to or from expansible chamber of the other motor): | ||||||||||
This subclass is indented under subclass 511. Apparatus wherein the external condition is the condition
of a motor other than the one having its operation modified, e.g.,
speed, fluid pressure, amount of flow or lack thereof to or from the
other motor, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 518 | Motive fluid control valve responsive to pressure in supply line to or exhaust line from motor which it modifies: |
| This subclass is indented under subclass 511. Apparatus wherein the means comprises a motive fluid control valve responsive to a change in the sensed condition in the motive fluid inlet line to the motor or in the motive fluid exhaust line from the motor to change the operation of said motor. | |
| 519 | With means for selectively changing the speed or force exerted on load by the selective application of motive fluid in a single direction to one or more working members: | ||||
| This subclass is indented under subclass 508. Apparatus having means for selectively changing the load
output speed or force by selectively applying motive fluid to different working
members interconnected to actuate the load or by selectively applying
different working fluid pressures in a single direction to one working
member of a plurality of working members driving the load.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 520 | Motors connected in series: | ||||||
This subclass is indented under subclass 508. Apparatus including a conduit means for connecting the contracting
chamber of one motor with the expanding chamber of another motor (serial
connection).
SEE OR SEARCH CLASS:
| |||||||
| 521 | Separate valve means actuatable by a common nonmanual actuator or separately actuatable means with common manual actuator: | ||||||||||
This subclass is indented under subclass 508. Apparatus having (a) separate valve means for plural working
members and a single nonmanual means for actuating each of the valve means
separately, or (b) separately actuatable valve means for plural
working members with a common manual actuator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 522 | With means to independently actuate valve means: |
| This subclass is indented under subclass 521. Apparatus wherein, in addition to the single actuating means, included is a means permitting independent operation of the separate valve means. | |
| 523 | Simultaneously actuated separate valve means: | ||
| This subclass is indented under subclass 521. Apparatus wherein the separate valve means may be activated
simultaneously.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 524 | Successive actuation of separate valve means: |
| This subclass is indented under subclass 521. Apparatus wherein the separate valve means are activated successively. | |
| 525 | With means to control the working fluid to one working member for movement relative to another without controlling the working fluid to the other working member by said means: | ||||||||
This subclass is indented under subclass 508. Apparatus having means to individually control one working
member to cause relative motion between said one working member
and another without altering the operation of the other working
member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 526 | With multiway valve in series with control means: |
| This subclass is indented under subclass 525. Apparatus and having a multiway valve disposed in series with the means to individually control one working member whereby the relative motion between working members may be produced. | |
| 527 | Valve controlled by remote means (e.g., radio, electromagnetic, etc.): | ||||
This subclass is indented under subclass 525. Apparatus wherein the control means is controlled by a remotely
controlled device.
| |||||
| 528 | Control means is fluid pressure operated valve: |
| This subclass is indented under subclass 525. Apparatus wherein the means comprises a valve which is actuated by a means responsive to the application of a pressurized fluid. | |
| 529 | Fluid pressure operated valve controlled by a pilot valve: |
| This subclass is indented under subclass 528. Apparatus having a pilot valve for controlling the fluid operated valve. | |
| 530 | Control means includes separate control valves for each working member: |
| This subclass is indented under subclass 525. Apparatus wherein the means to individually control one working member relative to another comprises a separate control valve for each working member. | |
| 531 | With additional control valve in series with at least one separate control valve in supply line to one of motors: |
| This subclass is indented under subclass 530. Apparatus and further including a second valve between the source and one of the motors, the second valve being disposed in serial relationship with respect to at least one of the control valves. | |
| 532 | With means for proportioning motive fluid supply to plural motors: | ||||||
This subclass is indented under subclass 508. Apparatus having means, e.g., a flow divider valve, etc.,
for insuring predetermined proportional motive fluid supply to plural
motors.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 533 | Single valve for plural rigidly connected working members: | ||
| This subclass is indented under subclass 508. Apparatus having a single valve controlling motive fluid
to plural motors, the motor working members being rigidly connected.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 534 | Single valve for relatively movable working members driving common load: |
| This subclass is indented under subclass 508. Apparatus having a single valve controlling motive fluid to plural motors, the motor working members being relatively movable and connected to a common output. | |
| 535 | Relatively movable working members of unequal cross-sectional areas: |
| This subclass is indented under subclass 508. Apparatus wherein at least two of the working members are relatively movable and have cross-sectional areas which are unequal. | |
| 536 | Single valve for relatively movable working members: |
| This subclass is indented under subclass 508. Apparatus wherein at least two of the working members are relatively movable and have their movements controlled by a common valve arrangement. | |