![[Search a list of Patent Appplications for class 335]](../as.gif) CLASS 335, | .ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS |
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SECTION I - CLASS DEFINITION
This class is restricted to the structure of electric current switching devices or relays of general application for closing or opening electrical circuits which devices are magnetically operated or to magnet structure, per se, either electromagnets or permanent magnets, adapted for use as a source of magnetic flux for performing external work.
The devices classified in this class are for the most part of the electromagnetic type utilizing magnetic cores and armatures. However, included also are devices of the electrodynamic type wherein mutually coupled conductors are caused to move relative to each other by the interaction of the magnetic fields produced by the flow of electric currents in the conductors.
Combinations of magnetically actuated circuit makers and breakers or work magnets and electromagnets with electrical connector plugs, sockets or other special type housings or casings are in this class.
Electrical systems or circuits which include the magnetically controlled switches or relays or work magnet and electromagnet structures comprising the subject matter of this class, are excluded from this class. These systems or circuits are classified in the various electrical or art classes depending upon the type of electrical system or apparatus controlled.
This class also includes subcombinations of magnetically actuated switches and relays classified in this class and which are either claimed as used in a magnetically actuated switch or relay or which are by disclosure peculiar to such use.
SECTION II - REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
| 29, | Metal Working, subclasses 602.1+ for methods of manufacturing transformers and inductances, and residual methods of manufacturing magnets and electromagnets which do not fall elsewhere, and see the extensive notes to subclass 602.1 for the lines between Class 29 and other classes. |
| 140, | Wireworking, subclasses 71+ for wireworking apparatus, some of which can be used to manufacture electromagnets. |
| 148, | Metal Treatment, subclasses 100 through 122for processes of improving the magnetic properties of material having at least one component which is a free metal or alloy, other than by mere magnetization, and subclasses 31.55 and 31.57 for stock resulting from such processes; subclass 100, notes, for lines between Class 148 and other classes. |
| 174, | Electricity: Conductors and Insulators, for miscellaneous conductors and insulator structure, some of which is applicable in the electromagnet. |
| 178, | Telegraphy, appropriate subclasses for magnets and electromagnets utilized in telegraph communication systems. |
| 198, | Conveyors: Power-Driven, subclasses 381 , 439 and 619 for magnetic type conveyors. |
| 204, | Chemistry: Electrical and Wave Energy, subclasses 155+ for processes for producing chemical changes by the use of magnetic devices and subclass 193 for corresponding apparatus. |
| 210, | Liquid Purification or Separation, subclasses 222+ for such subject matter having magnetic means to effect the purification or separation. |
| 219, | Electric Heating, subclasses 600+ for inductive heating, subclasses 678+ for microwave heating, and subclasses 764+ for capacitive dielectric heating. |
| 221, | Article Dispensing, appropriate subclasses and see especially subclass 212 for magnetic article holding discharge assistants and the controls therefor. |
| 234, | Selective Cutting (e.g., Punching), appropriate subclasses, and particularly subclasses 59+ for a pattern-controlled selective cutting machine wherein the pattern senser may involve electrical circuit-controllers. |
| 242, | Winding, Tensioning, or Guiding, subclasses 430+ for winding of motor cores, inductances, and resistances. |
| 246, | Railway Switches and Signals, appropriate subclasses for electric railway signaling systems utilizing magnets and electromagnets. |
| 250, | Radiant Energy, subclasses 281+ for ionic separation or analysis methods and apparatus which use magnets or electromagnets, subclasses 396+ for electron or ion beam deflection or focusing systems utilizing magnets or electromagnets. |
| 252, | Compositions, subclasses 62.51+ for processes of making magnetic compositions and the resulting product when it is claimed as stock or bulk material, and subclasses 500+ for electrically conductive compositions and devices defined solely in terms of the composition of which they are composed. Included are contacts and switches defined solely in terms of their composition or stock. |
| 292, | Closure Fasteners, subclass 251.5 for magnetic closure fasteners. |
| 294, | Handling: Hand and Hoist-Line Implements, subclasses 65.5 and 192 for grappling devices using a magnetic actuating system. |
| 307, | Electrical Transmission or Interconnection Systems, particularly subclasses 38 , 55+, 96+, 100, 326+ for switching systems and subclass 101 for the control or removal of residual or remnant magnetism. |
| 310, | Electrical Generator or Motor Structure, subclasses 10+ for electric motor and generator structure utilizing magnets or electromagnets. |
| 313, | Electric Lamp and Discharge Devices, is the generic class for the structure of space discharge devices; subclasses 153+ for space discharge devices and lamps utilizing magnets or electromagnets; subclasses 146+ for Class 313 for discharge devices which are provided with a movable electrode. Some discharge devices are closely analogous in structure to some types of circuit makers and breakers. See Class 313, class definition, Lines With Other Classes and Within This Class, "Distinction Between Discharge Devices and Electric Switches," for the distinction between a space discharge device and a circuit maker and breaker. |
| 314, | Electric Lamp and Discharge Devices: Consumable Electrodes, appropriate subclasses for arc lamps having magnets and electromagnets for controlling the feed of arc electrodes. Note particularly subclasses 113+ . |
| 315, | Electric Lamp and Discharge Devices: Systems, appropriate subclasses for electric lamp and space discharge device systems having electromagnets and magnets. |
| 318, | Electricity: Motive Power Systems, appropriate subclasses for electric motor control systems utilizing magnets, electromagnets or relays, particularly subclasses 789+ for induction motor systems operating from a single phase source with start winding removal under the control of an electromagnetic switch; and subclasses 821+ for induction motor systems having the impedance of the secondary circuit under the control of an electromagnetic switch. |
| 320, | Electricity: Battery or Capacitor Charging or Discharging, appropriate subclasses for battery and condenser charging and discharging systems utilizing magnets and electromagnets or relays. |
| 322, | Electricity: Single Generator Systems, appropriate subclasses for generator systems utilizing magnets, electromagnets or relays. |
| 323, | Electricity: Power Supply or Regulation Systems, appropriate subclasses for voltage control or phase control systems utilizing magnets, electromagnets or relays. |
| 324, | Electricity: Measuring and Testing, subclasses 415+ for contact, relays and switch testing, subclass 200 for magnetic testing devices utilizing magnets and electromagnets or inductors, and subclasses 76.11+ for electric meters utilizing magnets and electromagnets. |
| 332, | Modulators, appropriate subclasses for modulators utilizing magnets and electromagnets. |
| 333, | Wave Transmission Lines and Networks, appropriate subclass for wave transmission lines and networks utilizing magnets, electromagnets or relays, subclasses 101+ for plural channel systems including branched circuits with switching, subclass 13 for resonator type breakdown discharge system, e.g., T-R or R-T systems, and 245+ subclasses for long line elements and components which may perform a switching or blocking function, e.g., long line short circuiting switches and long line shorting plugs. |
| 334, | Tuners, appropriate subclasses for a variable tuner comprising an inductor and a capacitor, with the inductor and/or capacitor being variable, subclasses 47+ for tuners which are varied or adjusted by a switching operation which usually involves a make and break type switch of the electromagnetically actuated type. |
| 336, | Inductor Devices, appropriate subclasses for the structure of transformers and inductive reactors of general utility. |
| 340, | Communications: Electrical, appropriate subclasses for miscellaneous electrical communication systems utilizing magnets, electromagnets or electromagnetically actuated switches. |
| 343, | Communications: Radio Wave Antennas, for radio wave energy systems such as radar and directive systems, which have an antenna, some of which systems utilize magnets, electromagnets or relays and for antennas which may utilize electromagnetically actuated switches, note particularly subclass 768 for slot type antennas with periodic control of the slot or coupling; subclass 777 for plural wave guide type antennas with control of the individual antenna; subclass 876 for antennas with switching between the antennas and lines; and subclass 904 for antennas which may be combined with a switch. |
| 346, | Recorders, appropriate subclasses for recording devices utilizing magnets, electromagnets or relays. |
| 361, | Electricity: Electrical Systems and Devices, subclasses 245+ for polarity reversing systems; subclasses 2+ for safely systems involving circuit interruption; subclasses 139+ for relay and electromagnetic switching systems; and subclasses 600+, especially subclass 376 for arrangements of circuit-closer structures on a mounting or combinations of circuit-closers with conductors or busbars, including enclosed or housed switchboards. |
| 362, | Illumination, subclass 398 for electric illumination device having magnetic supporting means. |
| 363, | Electric Power Conversion Systems, appropriate subclasses for conversion systems utilizing electromagnets, magnets, or relays. |
| 373, | Industrial Electric Heating Furnaces, particularly subclasses 138+ for heating inductors combined with electric furnace structure. |
| 422, | Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing, subclasses 186.01+ for apparatus for producing chemical changes in electromagnetic fields. |
| 427, | Coating Processes, subclasses 58+ for coating processes, per se, wherein the product in useful as an electrical product. |
| 428, | Stock Material or Miscellaneous Articles, subclasses 375+ for coated electrical conductors which may include contacts and switches, but which are merely recited as a base with a particular coating thereon. |
| 439, | Electrical Connectors, subclass 12 for electrical connectors having magnetic holding means. |
| 455, | Telecommunications, subclasses 352+ for remotely controlled radio receivers which may use electromagnets; and subclasses 170.1+ for radio receivers for tuning or wave selection using electromagnets. |
| 505, | Superconductor Technology: Apparatus, Material, Process, subclasses 150+ for high temperature (Tc > 30 K) superconducting devices, and particularly subclasses 211+ for electrical energy storage devices, magnetic coils, wires, cable, etc. |
| 600, | Surgery, subclasses 9+ for permanent magnets or electromagnets utilized in surgery and diagnostics. |
SUBCLASSES
![[List of Patents for class 335 subclass 1]](../ps.gif) 1 | COMBINED DIVERSE SWITCHES (E.G., MANUAL-ACTUATED AND ART TYPE): | ||||||||||||||
This subclass is indented under the class definition. Devices including at least one contact actuating switch
means of the type classifiable in this class in combination with
a diverse type switching means of a type classifiable elsewhere
in another art class. The two or more switching means
may be physically located in the same housing or casing and may
have cooperative features as long as each one is operative independently
of the other. Some examples of diverse type switches are
the mechanical, thermal and thermal current actuated type.
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| 2 | ELECTROMAGNETICALLY ACTUATED SWITCHES: | ||||||||||||||||||||||||||||
This subclass is indented under the class definition. Devices including operating or actuating means for opening
or closing the switch contacts and in which at least one of such
operating or actuating means is an electromagnet. For
purposes of classification in this subclass an electrical circuit
is considered to be the equivalent to a single continuous conductor joining
a source to a load through a device capable of interrupting or completing
the continuity of the conductor.
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| 3 | Utilizing magnetostrictive elements: | ||||||||
| This subclass is indented under subclass 2. Devices including at least one element of the contact actuating
or control means which consists of ferromagnetic material whose
physical dimensions are subject to change in the presence of a magnetic
field.
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| 4 | Radio frequency switch (e.g., T/R switch): | ||||||||
This subclass is indented under subclass 2. Subject matter in which the device includes structure which
peculiarly adapts or restricts its use to radio-frequency
or microwave frequency conductive circuitry.
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| 5 | With coaxial components: | ||
| This subclass is indented under subclass 4. Subject matter wherein the device includes structure which
peculiarly adapts it for use in the completion or disconnection
of circuitry consisting of coaxial conductors.
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| 6 | Automatic circuit-interrupting devices (e.g., circuit-protective devices): | ||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the device comprises means whereby
normally closed contacts are automatically interrupted upon the
occurrence of an abnormal circuit condition in a circuit with which
the device is designed to be used. The circuit interrupting
device may be, by way of example, of any one of
the types known as "air circuit breakers" or "oil
circuit breakers", which circuit breakers may
be of the "single-throw", "double-throw" or "multiple
circuit breaker" type; provided, that
at least one electromagnet is utilized as a means for operating the
contacts to an open position upon the occurrence of an abnormal
condition.
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| 7 | Responsive to plural diverse circuit conditions (e.g., voltage and current): | ||||||
| This subclass is indented under subclass 6. Subject matter wherein the automatic circuit interrupting
device comprises means responsive to plural diverse abnormal circuit
conditions such as overload under voltage, etc. Usually
the actuating means comprises separate devices each of which responds
to a given predetermined condition and is operative either independently
or in cooperation with another means. Some examples; (a) plural
electromagnets one of which is voltage responsive and one of which
is current responsive or (b) overload and underload
coils.
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| 8 | Multipole or polyphase: | ||||||||
| This subclass is indented under subclass 6. Subject matter wherein the circuit interrupting device comprises
a plurality of individual conductors with contact pairs associated
with each conductor a contact pair actuating means for each contact
pair, each contact pair completing a circuit through one
conductor of a polyphase or plural conductor transmission line.
Devices which are known as bipole or double pole and which complete
the circuit in each conductor of a direct current circuit will also
be found here.
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| 9 | With individual latch or trip means in each leg: |
| This subclass is indented under subclass 8. Subject matter wherein the device comprises individual latching or tripping means associated with each separate phase or leg contact pair thereof. The individual latch or trip means may operate individually on its corresponding contact pair of the circuit, or, may upon operation, actuate a tripping bar whereby the remaining contact pairs are opened. | |
| 10 | With common latch or trip means: |
| This subclass is indented under subclass 8. Subject matter wherein the interrupting device comprises a single latch or trip means whereby the plurality of phase or leg contacts pairs are simultaneously maintained in a first position until released whereupon the plurality of contact pairs are allowed to open simultaneously. | |
| 11 | Plural switches: | ||||||||||||||||||
This subclass is indented under subclass 6. Subject matter wherein the automatic circuit interrupting
means consists of two or more separate and distinct devices adapted
to jointly or separately interrupt the continuity of a circuit to
be controlled. The devices may be connected in series, tandem
or any other desired arrangement provided there is single continuous
circuit from a source to a load through the switch means.
For example, each switch may be in one leg of a two conductor
circuit.
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| 12 | With shunting contacts: | ||||||||||||||
| This subclass is indented under subclass 6. Subject matter wherein the interrupting device structure
includes auxiliary contacts or other significant means whereby an
electrical shunt circuit is established to bypass either the main circuit
contacts or the operating coil of the device, prior to
the opening or closing of the main contacts, thereby preventing
arcing and damage to either the main contacts or the operating coil.
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| 13 | With auxiliary switch means (e.g., for energizing coil): | ||||
| This subclass is indented under subclass 6. Subject matter wherein the interrupting device structure
includes at least one auxiliary switch means operative independently
of the main circuit contacts whereby a circuit is completed through
the electromagnetic operating coil of the contact actuating means
or through some other operative element of the device such as a holding
or tripping coil.
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| 14 | With direct connected contact separating means: | ||||||||||||||
This subclass is indented under subclass 6. Devices wherein the circuit interrupting means is directly
connected to the movable contact or contacts and operable by the
effect of a magnetic field through a movable armature, or other
mechanical means responsive to the magnetic field of a flux source.
That is the devices found in this subclass do not utilize a motion converting
mechanism between the movable armature or core and the contacts.
The devices classified here are, for the most part, of
the class or apparatus generally shown as "cut outs".
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| 15 | With contact biasing, holding or pressure control means: | ||||||||||||||||
| This subclass is indented under subclass 6. Subject matter wherein the interrupting device comprises
significant structure whereby the movable contact or contacts are
biased either open or closed, the pressure between the
contacts is controlled or regulated or by which the contacts are
held in the operative condition and which structure is separate
and distinct from the conventional latching devices customarily in
use.
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| 16 | Magnetic or electrodynamic (e.g., blowon or blowoff): |
| This subclass is indented under subclass 15. Subject matter wherein the significant biasing, holding or pressure control means consists of either a magnet or other device which depends for its operation on the reaction between current in one part of an electric circuit and the current in another part, such as a current loop for creating electrodynamic forces tending to separate or close the relatively movable contacts. | |
| 17 | With switch condition signalling, indicating or alarm means: | ||||||||
| This subclass is indented under subclass 6. Subject matter wherein the circuit interrupting device includes
signalling, indicating or alarm structure whereby the condition
of the switch, whether open or closed, physically
inoperative, etc., is automatically communicated
to an operator or other interested observer by visual or audible
means. In order to be classifiable in this subclass the
signalling or indicating means must include structure in addition
to an operating lever or other operating means whose position is
dependent upon whether the contacts are open or closed.
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| 18 | Responsive to predetermined or abnormal current condition (e.g., direction, phase angle or amplitude): | ||||||||||||
| This subclass is indented under subclass 6. Subject matter wherein the structure includes means automatically
responsive specifically to predetermined current values in the circuit
to be controlled or to some abnormal current condition in the circuit, such
as current reversal, etc.
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| 19 | Zero current: |
| This subclass is indented under subclass 18. Subject matter wherein the automatically responsive means is designed to be actuated when the current in the circuit to be controlled falls to a zero value. | |
| 20 | Voltage responsive (under, over or no voltage): | ||||||
| This subclass is indented under subclass 6. Subject matter wherein the structure includes means automatically
responsive specifically to predetermined values, or some
abnormal condition, of the voltage existing in the circuit
to be controlled, such as, for example, over-voltage
under-voltage or no voltage.
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| 21 | With latch or trip means: | ||||||||||||
| This subclass is indented under subclass 6. Subject matter wherein the structure includes significant
details of operating means whereby the contacts may be restrained
in a closed condition by a latch or detent which may be tripped
by the action of a magnet or other means. The contacts
are usually held in circuit closing position and tripped to open
position.
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| 22 | Plural latch or combined latch operating means for single latch: | ||||||||
| This subclass is indented under subclass 21. Subject matter wherein the significant latching or tripping
structure comprises two or more separate means, whereby
the contacts are maintained in a closed position until released or
whereby the latching means is released and the contacts allowed
to open, and each acting independently of the other.
Devices in which the latching means comprises a main latch under
the control of an auxiliary latch and in which the actuation of
the main latch depends upon the condition of the auxiliary latch
will not be found here but in the generic subclass 21 above.
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| 23 | With diverse-type actuating means (e.g., magnetic and thermal): |
| This subclass is indented under subclass 22. Subject matter wherein the latching or tripping means consists of a plurality of means, each of which is operable upon a different principle, as for instance, one may be magnetic and the other mechanical, or one thermal and the other manual. | |
| 24 | Trip-free (i.e., cannot be manually reclosed while overload exists): | ||||
This subclass is indented under subclass 21. Subject matter wherein the device comprises, other
than in name only, significant details of structure which
is operative, upon the occurance of abnormal condition
in the controlled circuit, to prevent the main contacts
from remaining closed or the latch from functioning regardless of
the operation of a closing means, or wherein the main contacts
are automatically opened upon the occurrence of an abnormal circuit
condition independently of the position of a manual or other contact
closing means. One example of a device to be found here
consists of a manually closed switch in which a mechanical latch
is operated by a handle to maintain the contacts in closed condition, the latch
being operated or tripped automatically by some overload condition
even though the closing lever remains in the actuated condition.
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| 25 | With disabling means (for contact-actuator): | ||
| This subclass is indented under subclass 24. Subject matter wherein the device includes significant structure
whereby the operative connection between the main contact actuating means
and the means for maintaining the contacts in a closed condition (latch) is
disabled. The disabling means may include manual, gravity
actuated, lost motion or magnetic devices.
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| 26 | Reclosing or resetting: | ||||
| This subclass is indented under subclass 21. Subject matter wherein the structure includes significant
means whereby after an automatic disconnection of the main contacts, upon
the occurrence of a fault or surge in the circuit, the contacts
are automatically reclosed to restore service in the event that
the fault has been removed; or means whereby the latching
mechanism is reset to an operative condition whereby the contact
actuating means will be rigidly held in an operated condition upon
the contacts being reclosed.
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| 27 | Automatic combined with manual: | ||||
| This subclass is indented under subclass 26. Subject matter wherein the structure includes significant
means whereby the tripping operation is accomplished automatically
and the reclosing or resetting operation is accomplished by manual
means.
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| 28 | Automatic combined with timing or delay means: | ||||||||||||||||||||
| This subclass is indented under subclass 26. Subject matter wherein the reclosing or resetting structure
is automatically operated and is combined with significant means
whereby one or both operations take place after a time interval
longer than the normal operating interval or after a fixed or predetermined
interval which may be shorter than the normal interval.
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| 29 | Fluid-controlled: | ||||||||||||
| This subclass is indented under subclass 28. Subject matter wherein the significant timing or delay means
is fluid controlled.
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| 30 | Mechanical motor-controlled (e.g., clock movement): | ||||||||||||||||
| This subclass is indented under subclass 28. Subject matter wherein the delay structure includes means
whereby the time interval between the opening of the contacts and
the reclosing thereof, the resetting of the latch, or the
permanent opening (lockout) of the main contacts
is controlled by a mechanical motor means.
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| 31 | Thermally actuated: | ||||||||||
| This subclass is indented under subclass 28. Subject matter wherein the timing or delay structure includes
means whereby the time interval between the opening of the contacts and
the reclosing thereof, resetting of the latch or permanent
opening (lockout) of the main contacts is controlled
either wholly or in part by thermal means, such as a bimetallic
element, for example.
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| 32 | With counting or integrating means (e.g., repetitive for given number of reclosures): | ||
| This subclass is indented under subclass 28. Subject matter wherein the timing or delay structure includes
counting or integrating means whereby the time interval between
the initial opening and the final reclosing operation or final opening (lockout) of
the main contacts comprises a cycle of opening and reclosing operations
or whereby the circuit completing contacts are normally latched
in closed condition and released by a counting mechanism adapted
to respond to successive fault current impulses until a predetermined
number of such pulses after which the latch is released allowing
the contacts to open.
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| 33 | With means providing for operation after variable intervals or fixed intervals of different duration (e.g., first reset occurs instantaneously, with other at longer intervals): |
| This subclass is indented under subclass 32. Subject matter wherein the timing or delay means includes significant structure whereby at least two of the cycles between the initial opening of the main contacts and the final opening or, lockout thereof, are of different duration. For example, the initial opening may be instantaneous while the succeeding cycles may be of longer duration or the initial opening may be delayed while the succeeding cycles may be of short duration. | |
| 34 | With lockout: | ||||||
| This subclass is indented under subclass 32. Subject matter wherein the timing or delay means comprises
significant structure whereby the main contacts are positively restrained
from being reclosed after a given sequence of opening and reclosing
operations.
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| 35 | Plural trips or combined operating means for single trip (e.g., magnetic with thermal): | ||||||
This subclass is indented under subclass 21. Subject matter wherein the trip structure contains significant
details of more than a single tripping device each one of which
is responsive to a different condition or in which each is actuated
by means operating upon a different principle. Also devices
in which the current in the winding of a magnetic trip device is
controlled by a bimetal, or other thermal means, which
may be heated in response to current flow are also classified here.
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| 36 | With common structural elements: |
| This subclass is indented under subclass 35. Subject matter wherein the combined trip structure includes at least one element of structure common to or forming an integral part of each one of the plural separate tripping means. | |
| 37 | With thermal element comprising magnetic flux source: | ||||||
| This subclass is indented under subclass 35. Subject matter wherein the trip structure includes at least
one thermal element, which element acts as a winding or
flux source for a magnetic device. Usually, in
the patents classified here, the thermal element acts as
a delayed tripping device while the magnetic device operates instantly
upon excessive current in the thermal device.
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| 38 | Magnetic: | ||||||||||
| This subclass is indented under subclass 21. Subject matter wherein the trip structure consists wholly
or exclusively of magnetically operated means. The trip
means may consist of plural magnets acting conjointly, single
magnet means with a plurality of armatures or any other magnetic
structure so long as the operating means consists of magnetic means
only.
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| 39 | With time delay (e.g., thermal): | ||
| This subclass is indented under subclass 38. Subject matter wherein the trip structure includes significant
means whereby the tripping operation is delayed for a predetermined interval
of time after the occurrence of the circuit condition tending to
cause such a tripping action. The significant time delay
means may consist of a thermal or other restraining means, provided
that, it acts directly upon the magnetically operated tripping
means to thereby prevent the said magnetic means from performing a
tripping operation during the period of restraint.
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| 40 | Responsive to or proportional to degree of overload condition: | ||
| This subclass is indented under subclass 39. Subject matter wherein the significant time delay structure
includes means responsive to the degree of overload occurring in
the controlled circuit. For instance, the device
may contain a first magnetic winding or armature actuated instantaneously
upon a short circuit occurring and another winding or armature responsive
to a continuous overload.
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| 41 | With magnetic flux winding directly in series with main contacts: |
| This subclass is indented under subclass 38. Subject matter wherein the magnetic flux producing winging of the magnetic trip structure either comprises a section of a conductor, which is directly in the controlled circuit or is connected in series with the main contacts. | |
| 42 | With adjusting or calibrating means: | ||||
| This subclass is indented under subclass 38. Subject matter wherein the magnetic tripping means includes
significant structure whereby the trip operating characteristics
thereof may be adjusted or calibrated.
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| 43 | Thermal: | ||||||||||||
| This subclass is indented under subclass 21. Subject matter wherein the trip structure consists wholly
or exclusively of thermally actuated means. The thermal
member or members in the device may be inductively heated or directly
heated by current in the controlled circuit.
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| 44 | Including ambient temperature compensating means: | ||
| This subclass is indented under subclass 43. Subject matter wherein the significant tripping structure
includes means whereby the thermal actuating means is compensated
for changes in ambient temperature to prevent unwanted change in
the operating characteristics thereof.
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| 45 | With regulating, adjusting or calibrating means: | ||||
| This subclass is indented under subclass 43. Subject matter wherein the trip structure includes means
whereby the current value necessary to cause a response of the control device, of
the trip means, or the electromagnetic force necessary
to permit the actuation of the contacts to open or closed condition, may be
regulated, readily adjusted or calibrated.
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| 46 | With contact rebound or other undesirable motion prevention means: | ||||||||
| This subclass is indented under subclass 6. Subject matter wherein the interrupting device includes
significant structure whereby (a) rebound of the
contacts upon opening or closing (b) any undesirable
actuation of the contacts from one condition to another, either
in response to abnormal circuit conditions or by jar or shock, is
prevented, or (c) whereby the operating
mechanism may be positively locked against undesirable circuit opening
and/or closing movement.
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| |||||||||
| 47 | Utilizing conductive liquid (e.g., mercury): | ||||||||||||
This subclass is indented under subclass 2. Subject matter wherein the structure includes means whereby
at least one electrical circuit is completed through a conductive
liquid, usually mercury.
SEE OR SEARCH CLASS:
| |||||||||||||
| 48 | Comprising three or more electrodes or circuit-completion means: | ||||||||||||||||||||||
This subclass is indented under subclass 47. Subject matter wherein the structure includes a plurality
of three or more electrodes through which a current may enter or
leave the liquid or other contact means whereby at least two or more
external electrical circuits may be completed through the device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||||||||||
| 49 | With liquid-displacement means: | ||||
| This subclass is indented under subclass 47. Subject matter wherein the structure includes means whereby
an electrical circuit, or circuits, is completed
when the conductive liquid is displaced from a first position in
which the continuity of a conductive path between two or more electrodes
is interrupted to a second position in which the path is completed
through the liquid, the condition of the controlled circuit
at all times being dependent upon the position of the liquid.
The displacement means is generally of the magnetically controlled
plunger type but may consist of means for tilting the chamber holding
the liquid.
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| |||||
| 50 | Comprising plural interconnected liquid containers: | ||
| This subclass is indented under subclass 49. Subject matter wherein the structure includes at least two
separate wells or containers each of which is adapted to hold at
least a portion of the conductive fluid and in which the condition of
the external circuit depends upon the presence of, or the
amount of, liquid in one or the other or both containers.
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| |||
| 51 | Magnetic: |
| This subclass is indented under subclass 49. Subject matter wherein the liquid displacement structure includes magnetic flux generating means acting either directly upon the liquid or upon other means such as a piston or plunger which in turn acts to displace the liquid. | |
| 52 | Piston or plunger: | ||
| This subclass is indented under subclass 51. Subject matter wherein the magnetically actuated liquid
displacement means comprises a plunger or piston acting upon the
liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 53 | Combined with timing or delay means: | ||||||||||||||
| This subclass is indented under subclass 52. Subject matter wherein the structure includes a means in
addition to the plunger whereby the circuit to be controlled may
be maintained open or closed for predetermined interval of time.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
| 54 | Tiltable or rotating liquid chamber: | ||||||||||
| This subclass is indented under subclass 49. Subject matter wherein the liquid displacement means includes
structure whereby liquid displacement is accomplished by tilting
or rotating a chamber containing the liquid.
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| |||||||||||
| 55 | Armature structure: | ||
| This subclass is indented under subclass 47. Subject matter wherein the device includes significant armature
structure, not comprised of the liquid itself, and
whereby at least one movable contact is caused to complete an electrical circuit
through the medium of a conductive liquid. The liquid
may comprise the fixed contacts or electrodes or may be retained
in a reservoir from which the fixed contacts are wetted by capillary
or other action.
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| |||
| 56 | Comprising freely movable floating slug or mass: | ||||||
| This subclass is indented under subclass 55. Subject matter wherein the armature structure comprises
a globule, a metallic slug or other mass of material movable
in a fluid and responsive to a magnetic field and freely movable within
the magnetic field in such a manner as to complete or open an electric
circuit between contacts and entirely free of any mechanical securing
means. The fluid may be air, nonconductive liquid
or the conductive liquid itself.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 57 | Contact or electrode structure: | ||||||||||||
| This subclass is indented under subclass 47. Subject matter wherein the device includes significant contact
or electrode structural details.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||
| 58 | Mercury or mercury wetted: |
| This subclass is indented under subclass 57. Subject matter wherein the significant contact or electrode structure includes a mercury pool or a metallic member wetted with liquid mercury. | |
| 59 | Retarded or delayed type: | ||||||||||||||||||||||||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the device includes significant structure
whereby the timing of the opening or closing of the switch contacts
of the device takes place at an appreciable interval or intervals
of time after an actuating force is applied to the contact actuating
means or the timing is effected by varying the energizing current
applied to the magnetic winding of the device.
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| |||||||||||||||||||||||||||||||||||
| 60 | Plural sets of contacts alternately, consecutively or selectively opened or closed: | ||||||||||||||||||||
This subclass is indented under subclass 59. Subject matter wherein the device comprises means whereby
a plurality of two or more electric circuits are adapted to be energized
alternately, consecutively or selectively.
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SEE OR SEARCH CLASS:
| |||||||||||||||||||||
| 61 | With pneumatic delay means (e.g., dashpot, etc.): | ||||||||||||||
| This subclass is indented under subclass 59. Subject matter wherein the delay structure comprises pneumatic
means such as a dashpot, bellows, suction cup, etc., utilizing
air or other gaseous fluids.
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| |||||||||||||||
| 62 | With hydraulic delay means: | ||||||||||||
| This subclass is indented under subclass 59. Subject matter wherein the delay structure comprises means, operable
under the influence of a liquid.
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| |||||||||||||
| 63 | With magnetic or electromagnetically actuated delay means: | ||||||
| This subclass is indented under subclass 59. Subject matter wherein the delay structure comprises magnetic
means, per se, or mechanical elements which are
magnetically controlled.
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| |||||||
| 64 | With mechanical delay means: | ||||
| This subclass is indented under subclass 59. Subject matter wherein the delay structure comprises mechanical
or inertia means or a mechanical movement.
SEE OR SEARCH CLASS:
| |||||
| 65 | Motor or motor-controlled (e.g., clockwork): | ||||||||||||||
| This subclass is indented under subclass 64. Subject matter wherein the mechanical delay means comprises
separate and independent motor means. The motor may be
either electric or spring driven.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||
| 66 | Electrothermal delay means: | ||||||||||||||||||||||
This subclass is indented under subclass 59. Subject matter wherein the delay structure comprises means
whereby the desired time interval transpiring between the application
of a control signal and the contact actuation is determined by the
heating of a thermal element, such as a bimetallic element
for example, by an electric current.
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| |||||||||||||||||||||||
| 67 | Adjustable or regulatable: | ||
| This subclass is indented under subclass 59. Subject matter wherein the delay structure includes adjusting
or regulating means whereby the time delay interval transpiring before
the opening and or closing operation may be varied or controlled.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 68 | With motor: | ||||||||||||||||||
This subclass is indented under subclass 2. Subject matter wherein the electromagnetic switch operating
mechanism comprises or includes an electric motor or the combination of
electromagnetic means with at least one rotating motor means, in
addition to the electromagnetic means, whereby the main
contacts are caused to be operated to either the open or closed
position. The additional motor means may consist of a
spring motor operatively connected with an electromagnet.
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| |||||||||||||||||||
| 69 | Reversible or oscillatable: | ||
| This subclass is indented under subclass 68. Subject matter wherein the motor structure is reversible
in direction or oscillates cyclically about a center position first
in one direction and then the other.
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| |||
| 70 | Frequency-responsive or synchronous: | ||||||||||
| This subclass is indented under subclass 68. Subject matter wherein the motor structure is either responsive
to a predetermined frequency of the signalling or actuating current
or operates at a speed corresponding to the frequency of the actuating
current.
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| |||||||||||
| 71 | Contact actuating structure: | ||||||||||
| This subclass is indented under subclass 68. Subject matter wherein the device includes significant structure
operated by the motor whereby the main contacts are actuated to
or from an opened or closed condition.
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| |||||||||||
| 72 | Plural contacts: | ||||||
| This subclass is indented under subclass 71. Subject matter wherein the significant contact actuating
structure comprises means whereby a plurality of external electrical
circuits may be selectively completed by the device or in which a
plurality of fixed contacts are selectively connected to one or
more movable contacts by motor driven means.
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| |||||||
| 73 | Eccentric or cam: | ||||||
| This subclass is indented under subclass 71. Subject matter wherein the contact actuating structure includes
eccentric or cam means whereby at least one movable contact is actuated
directly.
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SEE OR SEARCH CLASS:
| |||||||
| 74 | Including brake, clutch or detent: | ||||||||||
| This subclass is indented under subclass 71. Subject matter wherein the contact actuating structure includes
braking, clutch or detent means between the driving motor
and the driven movable contact or contacts whereby the speed of
the opening or closing operation, the interval during which
the driving and the driven means are connected or the degree of contact
pressure may be controlled or whereby the device may be independently
manually controlled.
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| |||||||||||
| 75 | Magnetically actuated: | ||
| This subclass is indented under subclass 74. Subject matter wherein the brake, clutch or detent
means is magnetically operated.
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| |||
| 76 | Comprising energy storage means (e.g., wound spring): | ||||||||||||||||||
| This subclass is indented under subclass 71. Subject matter wherein the contact actuating structure includes, mechanical
energy storage means whereby the movable contact or contacts are
actuated to or from the closed position, the energy storage
taking place through the agency of a motor wound spring or other kinetic
energy device. The energy storage means may actuate the
contacts through mechanical gearing which comprises in itself all
the elements of a spring motor; for example, a
clock movement actuated switch is considered a motor driven switch
for classification here provided the spring is recharged by electric
motor means. The storage means may also consist of inertia
means released by a motor and transmitting energy via the force
of gravity.
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| |||||||||||||||||||
| 77 | With locking, latch or tripping structure: | ||||||||||||
| This subclass is indented under subclass 68. Subject matter wherein the structure includes significant
means whereby the contacts or the contact actuating means may be
positively locked or latched to prevent any desired movement during
the existence of a predetermined condition of the switch, such
as open or closed. The locking or latching means will
generally be provided with tripping structure to allow the latch
to be released upon the termination of the predetermined condition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
| 78 | Polarity-responsive: | ||||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure comprises circuit connection
devices in which the movement of an armature depends upon the direction
of the voltage or current flowing in the circuit controlling the
armature. Usually the devices comprise an operating magnet
associated with a permanent magnet or a constantly-energized
electromagnet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||
| 79 | Storage or memory type (e.g., bistable): | ||||||||||||
This subclass is indented under subclass 78. Subject matter wherein the switch comprises within itself
or forms an essential component of, a device into which
information, in the form of an electric signal, can
be introduced for extraction at a latter time, the switch
being transferred to one or the other of its conditions depending
upon the polarity of the energization current and remains in that
condition subsequent to deenergization until reset.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||
| 80 | Armature structure: | ||||||||||
| This subclass is indented under subclass 78. Subject matter wherein the device includes significant armature
structure specifically adapted for use in a polarity responsive
device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||
| 81 | Freely movable within coil or magnetic field between poles: | ||
| This subclass is indented under subclass 80. Subject matter wherein the significant armature structure
includes means whereby the armature is supported in such a manner
as to be freely movable within an axial cavity of a coil or within
the flux field set up between pole faces. The motion may
be rotary around an axis or may be generally parallel with the axis
of the coil or in a plane in the direction of the axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 82 | Floating (i.e., no fixed pivot): | ||||
| This subclass is indented under subclass 80. Subject matter wherein the armature is not permanently attached
at a fixed point, therefore, being free to move
in each of several directions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 83 | Contact structure of composition: | ||||||||
| This subclass is indented under subclass 78. Subject matter wherein the device includes significant contact
structure or composition particularly adapted for use in a polarized
type switch.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 84 | Magnetic structure (e.g., saturable): | ||||||
| This subclass is indented under subclass 78. Subject matter wherein the device includes significant magnetic
structural elements or materials of construction and which are particularly applicable
to polarized systems.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 85 | Pole structure: | ||
| This subclass is indented under subclass 84. Subject matter wherein the significant magnetic structure
recited comprises particular pole structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 86 | With adjusting means: | ||||
| This subclass is indented under subclass 78. Subject matter wherein the structure includes means whereby
some feature of the device, such as the air gap, pole
pieces, contacts, value of the actuating current
or armature neutral position, may be adjusted or regulated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 87 | Periodic (e.g., vibrators): | ||||||||||||||||||||
This subclass is indented under subclass 2. Subject matter wherein the device comprises means whereby
a circuit is completed and broken intermittently or cyclically at
constantly recurring intervals under the influence of a magnetic
flux field.
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| |||||||||||||||||||||
| 88 | Plural periodic switches or with plural pairs of contacts: | ||||
| This subclass is indented under subclass 87. Subject matter wherein the structure includes a plurality
of devices falling under the definition of subclass 87 but forming
a single assembly or single entity under the class definition or
a single device having a plurality of pairs of contacts whereby
two or more separate and distinct electrical circuits may be completed
through the device. This subclass does not include those
devices which comprise a single movable contact which alternately
contacts each of two fixed contacts thereby varying the direction
of current in the two conductors of a single circuit.
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| |||||
| 89 | Selectively, alternately, or consecutively actuated: | ||
| This subclass is indented under subclass 88. Subject matter wherein the structure includes means whereby
the plurality of contacts are actuated in such a manner as to complete
each one of a plurality of circuits selectively, alternately
or consecutively.
SEE OR SEARCH CLASS:
| |||
| 90 | With vibrating or oscillating element damping, frequency adjusting or vibration control: | ||||||||||
| This subclass is indented under subclass 87. Subject matter wherein the structure includes means whereby
the amplitude of the vibrator or periodic motion, the natural
resonant frequency of the vibratory element, or equalization
of the periods between the engagement of the movable contact and
each one of fixed contacts is controlled or set.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||
| 91 | Actuating magnet structure or material: | ||||
| This subclass is indented under subclass 87. Subject matter wherein the structure comprises significant
magnetic structure or material peculiarly adapted for use in a periodic
or cyclic switch.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 92 | Plural magnets: | ||||||
| This subclass is indented under subclass 91. Subject matter wherein the magnetic structure includes at
least two or more distinct magnetic means which may or may not be
of diverse type and each of which performs its particular function
independently of the other. For example, one
magnetic means may consist of fluctuating magnetic field generating
means for actuating an armature or reed while the other consists
of a permanent magnet providing a biasing means for the armature
or reed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 93 | Vibratory reed or other periodic contact actuator: | ||||||||||||||||||||
This subclass is indented under subclass 87. Subject matter wherein the structure includes significant
vibratory reed or other periodically actuated means whereby a movable
contact or contacts is periodically caused to engage one or more
fixed contacts. The vibratory reed or other actuating
structure may be unitary with or comprise the armature of the magnet
means and still be classified here as long as the motion of the
movable contact is directly responsive to or proportional to the
movement of the armature.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||||||||
| 94 | Tuned or resonant at a particular frequency: | ||||||
| This subclass is indented under subclass 93. Subject matter wherein the vibratory reed or other contact
actuating means is pretuned or inherently resonant at a particular
predetermined frequency or band of frequencies.
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| |||||||
| 95 | Armature: | ||||||||||||||||||
| This subclass is indented under subclass 87. Subject matter wherein the structure includes significant
and specific details of the armature element or material of construction
distinct from the vibratory reed or contact actuating means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||||
| 96 | Adjustable: | ||||||
| This subclass is indented under subclass 95. Subject matter wherein the structure includes means whereby
some operating characteristic, physical dimension or element
of the armature is adjustably variable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 97 | Contact arrangement or composition: | ||||||||||
| This subclass is indented under subclass 87. Subject matter wherein the structure includes significant
and specific details of the contact structure or material of construction
thereof. For purposes of classification in this subclass, contact
supporting, holding and adjusting means are considered
contact structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 98 | Adjustable contacts: | ||||||
| This subclass is indented under subclass 97. Subject matter wherein the contact structure includes adjustment
means whereby some operating characteristic, physical mounting
or element may be adjustably varied.
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| |||||||
| 99 | Alternating or fluctuating current type: | ||||||||
| This subclass is indented under subclass 2. Subject matter wherein the device is specifically adapted
for operation by an alternating, pulsating or fluctuating
current. The actuating current may be a periodic current, the
average value of which over a given period is zero and which varies
according to a sinusoidal function, a bi-directional
current which has both positive and negative values, or
a periodic current which is the sum of a direct current and an alternating
current.
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| |||||||||
| 100 | Induction or eddy current (e.g., vane or closed conductive loop): | ||||||||||
| This subclass is indented under subclass 99. Subject matter wherein the contact actuating means comprises, or
is responsive to, a device which derives its operative
torque by magnetic induction from a winding or windings carrying alternating
current, by the magnetic reaction between a current flowing
in a rotor and an external flux path or by the magnetic repulsive force
between magnetic flux sources.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||
| 101 | Preselected or synchronous frequency responsive: | ||||||||||||||||||||
This subclass is indented under subclass 99. Subject matter wherein the device is adapted to selectively
operate at a predetermined frequency of the alternating operating
current or wherein resonant vibration of a tuned reed armature will
only occur when the cyclic period of the alternating current is
the same as the resonant frequency of the tuned reed.
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| |||||||||||||||||||||
| 102 | Polyphase: | ||||||||
| This subclass is indented under subclass 99. Subject matter wherein the device is specifically adapted
to operate in response to the currents in the respective phases
of a multiphase or polyphase system, whereby one polyphase network
is connected to another similar polyphase network through the device
or wherein the device consists of a plurality of magnetic windings
and having supplied to each winding an operating current at a phase
angle different from that applied to each of the others.
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| |||||||||
| 103 | With plural magnetic-actuating structures: | ||||||||||||||||||||
| This subclass is indented under subclass 99. Subject matter wherein the electromagnetic operating means
includes a plurality of magnetic flux sources.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||||||
| 104 | With chatter, bounce or vibration-prevention means: | ||||||||||
| This subclass is indented under subclass 99. Subject matter wherein the structure includes means whereby
the contacts of the device are prevented from chattering due to
counter electromotive forces in the circuit or other causes, rebounding
upon closing or whereby the armature is prevented from rocking or
vibrating due to the pulsating force in the operating coil when
energized by alternating current.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 105 | With damping or adjustment means: | ||||||||||||||||||
| This subclass is indented under subclass 99. Subject matter wherein the structure includes means whereby
at least one element of the device, or some operating characteristic
is adjustable either at will or permanently, the extent
of movement of either the armature or the movable contact is adjusted
or regulated, or whereby the speed of such movement is
controlled.
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| |||||||||||||||||||
| 106 | Multiple contact type: | ||||||||||||||||||||||||||||||||||||
This subclass is indented under subclass 2. Subject matter wherein the switch structure includes a plurality
of fixed contacts each one of which, either singly or in
a common group, is adapted to be connected to a separate
independent external electrical circuit in such a manner that upon
being contacted by a movable contact, or contacts, operated
by the magnetic control means, a separate distinct electrical
circuit is completed therethrough.
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| |||||||||||||||||||||||||||||||||||||
| 107 | Contacts-selectively, sequentially, alternately, or intermittently actuated: | ||||||||||||||||
| This subclass is indented under subclass 106. Subject matter wherein the structure includes significant
means whereby individual contacts connected to external circuits
may be actuated in such a manner that a plurality of individually controlled
circuits are completed through the device selectively, sequentially, or
alternately.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||||
| 108 | Automatic telephone type: | ||
| This subclass is indented under subclass 107. Subject matter wherein the contact actuating structure comprises
self-acting means, operating by its own self-contained
mechanism when actuated by some impersonal influence, as
for example, a change in current strength or a signalling
current or voltage transmitted from a distance, which is
not manual and requiring personal intervention, i.e., not
requiring the presence of an operator. The art to be found
in this and the indented subclasses is analogous to the automatic
telephone type switching arrangements to be found in Class 379, subclasses
16+; but which is of general application and not
restricted to any one art device specifically otherwise classifiable.
The devices classified here may utilize mechanical structure for the
actuation of the main contacts which are to be controlled, provided
that the primary instigating means comprises electromagnetic or other
magnetic means.
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| |||
| 109 | Plural or multidirection mechanical selector motions: | ||
| This subclass is indented under subclass 108. Subject matter wherein the contact actuating structure comprises
a movable contact or wiper means movable in more than a single direction whereby
the contacts are selectively chosen. The movement may
comprise any combination of vertical, rotary, radial
or other motions. The two or more directional movements
are usually accomplished by means of separate magnet devices each
operating separately in response to a given condition in the device.
SEE OR SEARCH CLASS:
| |||
| 110 | With motion-conversion means: | ||
| This subclass is indented under subclass 109. Subject matter wherein the device includes means, in
addition to the directional driving mechanism, whereby
motion in a first direction is converted to a motion in a second
direction.
SEE OR SEARCH CLASS:
| |||
| 111 | Selector structure: | ||
This subclass is indented under subclass 109. Subject matter wherein the structure includes details of
at least one device which, in response to the appropriate
control signals, connects one input path to one of a number
of output paths, or alternatively, one of a number
of input paths to one output path.
| |||
| 112 | Crossbar type: | ||
| This subclass is indented under subclass 111. Subject matter wherein the structure includes a device having
a plurality of contacts arranged in a vertical path, a
plurality of contacts arranged in a plurality of horizontal paths
and an electromagnetically operated means for interconnecting any
one or any group of the vertically arranged contacts with any one
or any group of the horizontally arranged contacts.
SEE OR SEARCH CLASS:
| |||
| 113 | With holding, locking or latching means: | ||||||||||||||||
| This subclass is indented under subclass 108. Subject matter wherein the device includes holding, latching
or locking means whereby a selected set of movable contacts or a
brush is caused to lock onto a particular bank of contacts or a
single contact in a given bank when moved to an operated condition
and remain in the operated condition until released by some external
actuating means or signal.
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| |||||||||||||||||
| 114 | Rotary selector motion: | ||||||||
| This subclass is indented under subclass 108. Subject matter wherein the structure includes significant
means whereby contact selection is accomplished by movement of a
selector mechanism movable in a rotary manner in a single plane, as
for example, circular movement in a horizontal plane.
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| |||||||||
| 115 | Reciprocating selector motion (e.g., sliding): | ||||||
| This subclass is indented under subclass 108. Subject matter wherein the structure includes means whereby
one or more carriers for the contact selecting means is caused to
move or reciprocate in a single plane. The motion is usually
in a vertical plane.
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| |||||||
| 116 | With reset or selector-restoring means: |
| This subclass is indented under subclass 108. Subject matter wherein the structure includes positive acting means whereby, after the completion of a contact selection operation, the selector is automatically returned to an initial position in readiness for a further selection operation. | |
| 117 | With operational mode-varying means: |
| This subclass is indented under subclass 108. Subject matter wherein the structure comprises means whereby the wiper or contact selector is caused to be advanced in steps of different lengths or intervals covering variable numbers of terminals or contacts. The structure included here includes devices having a single operating mechanism for moving a brush set in one direction in steps of one length and in another direction in steps of another different length. | |
| 118 | Motor-driven: | ||||
| This subclass is indented under subclass 108. Subject matter wherein the structure includes significant
electric motor means whereby the selector actuating means is driven
in response to an input signal.
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| |||||
| 119 | Plural armatures: | ||||||||||||
| This subclass is indented under subclass 107. Subject matter wherein the contact control operation is
accomplished through the actuation of a plurality of armatures either
acting conjointly to operate a single contact actuating means or
each individually operating a separate contact actuating means.
The structure found in this subclass may include a plurality of
magnetic coils each operating one of the plurality of armatures
or a single coil driving two or more armatures.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
| 120 | With interlocking or mechanical connection: | ||||||
| This subclass is indented under subclass 119. Subject matter wherein the structure includes interlocking
or mechanical means whereby the armatures are caused to be operated
in unison or whereby one or both are adapted to exercise control
over the other thereby causing the completion of selected electrical
circuits through the device in the proper sequence.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||
| 121 | Contact-actuation means: | ||||||
| This subclass is indented under subclass 107. Subject matter wherein the structure includes significant
means, operatively connected to or combined with an armature, whereby
the plurality of contacts are actuated from a first to a second
or subsequent condition thereby completing selected circuits through
the device.
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| |||||||
| 122 | With rotary or compound motion device (e.g., rack and pinion): | ||||||||
| This subclass is indented under subclass 121. Subject matter wherein the significant contact actuating
means comprises at least one member which is moved in a circular
arc by a rotating member or a plurality of members which collectively
transpose a motion of a first type to a second motion of another
type; as for example, a reciprocating motion is
converted to a rotary motion, etc.
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| |||||||||
| 123 | Pawl and ratchet: | ||||
| This subclass is indented under subclass 122. Subject matter wherein the contact actuating means comprises
significant structural details of a pawl and ratchet device.
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| |||||
| 124 | Armature structure: | ||
| This subclass is indented under subclass 121. Subject matter wherein the contact actuating structure is
combined with armature structure which within itself comprises significant means
whereby the actuating means is controlled.
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| |||
| 125 | Rotary armature: | ||||||
| This subclass is indented under subclass 124. Subject matter wherein the armature structure comprises
an armature pivoted or otherwise supported at a point in such a
manner as to be alternately attracted by different poles of a magnet
structure for producing motion in a rotary or oscillatory manner
whereby the contacts are caused to be selectively opened or closed.
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| |||||||
| 126 | Reciprocating or linearly sliding: | ||||||||||
| This subclass is indented under subclass 121. Subject matter wherein the contact actuating means consists
of a device which is linearly slidable or reciprocable in alternate
reverse directions along a single fixed axis or in a single plane, e.g., sliding
bar or comb.
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| |||||||||||
| 127 | Simultaneously actuated: | ||||
| This subclass is indented under subclass 106. Subject matter wherein the structure includes at least one
group of contacts adapted to operate as a unit, and means
whereby all of the contacts of at least one group are actuated in
a manner such that all of the plurality of external circuits connected
to the contacts of the group are completed or opened simultaneously.
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| |||||
| 128 | By pivotal or rockable armature: |
| This subclass is indented under subclass 127. Subject matter wherein the structure includes at least one armature; rockable about an axis coinciding with the coil axis or otherwise pivoted for rotation about a fixed axis and combined with means, depending upon the attraction or nonattraction of the armature, whereby at least a group of the plurality of contacts are actuated as a group. | |
| 129 | Movable contacts or slidable card bar or comb: | ||||
| This subclass is indented under subclass 128. Subject matter wherein the structure includes at least one
slidable card, bar or comb means actuatable by the armature
and adapted to embrace a plurality of movable contacts simultaneously.
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| |||||
| 130 | Movable contacts on circular card or comb structure: | ||||
| This subclass is indented under subclass 128. Subject matter wherein the structure includes at least one
circular plate, comb or other means whereby either first
plurality of contacts, a second such plurality, or
both are caused to be moved in a circular path having a common axis.
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| |||||
| 131 | By reciprocating armature: | ||||||
| This subclass is indented under subclass 127. Subject matter wherein the structure includes a sliding
core armature reciprocal in a linear manner, along the
axis of, or in a plane parallel with the axis of the controlling
magnet coil. The contact actuating means may be directly attached
to the core armature or may be otherwise attached by mechanical
structure which is actuatable by the motion of the armature.
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| |||||||
| 132 | With adjustable, replaceable or interchangeable structural features: | ||||||||||||||
| This subclass is indented under subclass 106. Subject matter wherein the structure includes at least one
structural unit which is specifically described as adapted to be
adjusted, interchangeable, removable or replaceable
without effecting the operativeness of the device as a whole or
whereby some operative characteristic of the device may be varied.
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| |||||||||||||||
| 133 | Contact structure or arrangement: | ||||||||||||||||
| This subclass is indented under subclass 106. Subject matter wherein the structure includes significant
details of the contact arrangement or structure; for example, a
matrix or cross bar arrangement, which particularly adapts
the contact assembly to operate in a predetermined manner or sequence.
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| |||||||||||||||||
| 134 | Grid or coordinate: | ||
| This subclass is indented under subclass 133. Subject matter wherein the contacts are arranged in coordinate
rows in planes which are at an angle to each other (usually
a right angle) or in a grid arrangement, whereby
contact is made by displacing one contact perpendicularly to another. The
switches found here are for the most part those known as crossbar or
coordinate types, similar to those found in Class 379, subclass
25, but not limited by the claim language to use in a telephone
system.
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| |||
| 135 | In pile or stack: | ||
| This subclass is indented under subclass 133. Subject matter wherein the contacts are specifically arranged
in a pile or stack.
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| |||
| 136 | With plural magnet or coil means: | ||||||||||||||||||||
| This subclass is indented under subclass 106. Subject matter wherein the structure includes a plurality
of magnet or coil means.
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| |||||||||||||||||||||
| 137 | Of diverse type: | ||||||
| This subclass is indented under subclass 136. Subject matter wherein the plural magnets are of diverse
magnetic characteristics, as for example, electromagnet
and permanent magnet or comprise diverse type windings.
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| |||||||
| 138 | Step-by-step type (e.g., closure responsive to predetermined number of control pulses): | ||
This subclass is indented under subclass 2. Subject matter wherein the device comprises means whereby
plural successive energizations of a control magnet by pulses of
control signal current produce a sequential or step-by-step operation
of a contact actuation means whereby a single set of main contacts
are opened or closed at the end of the sequence of pulsations sequence
of actuating pulses may comprise any number of pulses from two or more.
| |||
| 139 | With timing or indexing means (e.g., clock mechanism): | ||||||||||
| This subclass is indented under subclass 138. Subject matter wherein the structure includes means whereby
the successive steps take place at definite intervals, after
a predetermined time or in a given order or whereby it is possible
to determine the interval during which the contacts are held in
the make or break condition after arrival in that condition.
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| |||||||||||
| 140 | Ratchet and pawl-type actuator: | ||||||||||
| This subclass is indented under subclass 138. Subject matter wherein the structure includes ratchet and
pawl type mechanical operating means under the control of an armature
or armatures whereby the contacts are actuated to and from a closed
condition in a step-by-step manner.
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| |||||||||||
| 141 | With electrothermal-actuating means (e.g., expansible wire): | ||||||||||||||||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the subject matter includes the combination
of magnetic responsive control means combined with terminal-current
responsive means, such as fuses, cut-outs, latching
or other means effecting the operation of the device as a result
of heating by current flow. Usually, both diversely
responsive devices operate upon the same contact actuation or control
means. The heating current may comprise the entire current
flowing in the controlled circuit or a proportionate part thereof
flowing in a shunt circuit.
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| |||||||||||||||||||||||||||
| 142 | Fusible element: | ||||
| This subclass is indented under subclass 141. Subject matter wherein the thermal current responsive means
is specifically recited as consisting of at least one fusible element.
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| |||||
| 143 | Independently operative: |
| This subclass is indented under subclass 141. Subject matter wherein the structure includes significant details of both the magnetic and thermal devices, and in which each is operative to close or interrupt an electrical circuit independently of the other. | |
| 144 | With armature positioning or adjusting: | ||||||
| This subclass is indented under subclass 141. Subject matter wherein the structure includes means whereby
the physical position of the armature relative to magnetic pole
pieces or within an air gap at any given time is responsive to or
depends upon the influence of the thermal means.
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| |||||||
| 145 | Bimetallic element: | ||||||||||
| This subclass is indented under subclass 141. Subject matter wherein the thermal current responsive means
is specifically recited as consisting of at least one bimetallic
element.
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| |||||||||||
| 146 | Thermomagnetic (e.g., device whose magnetic permeability changes with temperature): | ||||||||||
| This subclass is indented under subclass 141. Subject matter wherein the electrothermal current responsive
actuating means consists of a material whose magnetic characteristics
vary with temperature. The magnetic means and thermal
current responsive means may be one and the same or may be separate
means.
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| |||||||||||
| 147 | Electrodynamically actuated: | ||||||||||||||||||||||||
| This subclass is indented under subclass 2. Devices in which the subject matter includes contact actuating
means utilizing the force of repulsion between two circuits when
a current is supplied to one and thereby induces a current in the
other causing a deflection dependent upon the interaction of magnetic
fields produced by the currents, means comprising plural magnets
whose effect, upon energization of one by an electric current
is a repulsion effect or devices in which an electrodynamic force which
is the effect of currents flowing in opposite directions in two
or more branches of a current carrying conductor is utilized for
the opening or closing of at least one pair of contacts.
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| |||||||||||||||||||||||||
| 148 | Moving coil type: | ||||||||||||||
This subclass is indented under subclass 147. Subject matter wherein the device includes structure by
which the mechanical forces necessary to actuate the movable contact, or
contacts, are developed by the interaction of the field
set up in a moving coil or closed conductive loop and the polarizing
field surrounding it. The fixed magnet is usually of the
permanent type but may be an electromagnet.
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| |||||||||||||||
| 149 | Plural coils: | ||
| This subclass is indented under subclass 148. Subject matter wherein the moving coil conductor structure
includes at least two such coils and in which the relative motion
of the circuit controlling contacts depends upon the position of
the coils relative to each other or the relative motion of the coils
within a flux field.
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| |||
| 150 | With reset or restoring means: | ||
| This subclass is indented under subclass 148. Subject matter wherein the structure includes means whereby
the contacts may be restored to an unactuated condition by returning
the contact arm to the zero or neutral setting of the device.
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| |||
| 151 | Vacuum or hermetically sealed type (e.g., reed switch): | ||||||||||||
| This subclass is indented under subclass 2. Subject matter and wherein at least the contacts, of
an electromagnetic switch operate in at least a partial vacuum or
wherein the contacts are housed in a space hermetically sealed and containing
a significant gas. The switches found here are for the
most part those commonly referred to as "reed switches".
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| |||||||||||||
| 152 | Plural: | ||||||||||
| This subclass is indented under subclass 151. Subject matter wherein the structure includes at least two
or more separate and distinct devices under the subclass 151 definition.
The devices are usually mounted in a group or cluster all being
under the influence of a single magnetic flux source and may act
cooperatively or individually.
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| |||||||||||
| 153 | With permanent magnet structure: | ||||||||||||
| This subclass is indented under subclass 151. Subject matter wherein the structure includes at least one
permanent magnet means.
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| |||||||||||||
| 154 | Armature, contact or contact-actuating means (e.g., sealed reed): | ||||||||||||||||||
| This subclass is indented under subclass 151. Subject matter wherein the structure includes specific mechanical
details of armature, contact actuating or contact structure
which is significantly peculiar to reed or other sealed switches.
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| |||||||||||||||||||
| 155 | With predetermined current or voltage value-responsive actuator: | ||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure includes means whereby
the contact opening or closing operation takes place only at a predetermined voltage
or upon the passage of an operating current, of a predetermined
value or range of values between predetermined limits, through the
control coil or coils of the device.
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| |||||||||||||
| 156 | With protective means for switch or contacts: | ||||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure includes at least one
means whereby the device is protected from physical or electrical
damage; such as, burnout, contact burning
or pitting, physical breakage or damage due to jar, overheating, etc.
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| |||||||||
| 157 | With operation-inhibiting means (shock resistant): | ||||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure includes positive locking
or holding means whereby the main contacts are inhibited or restrained
from movement by external sources of influence; for instance
against shock or accidental motion. The locking devices
to be found here generally comprise either mechanical or magnet
devices which are either manually or automatically operated independently
of any latching means which may be present; for example, holding coil
means.
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| |||||||||||||||
| 158 | From open position: |
| This subclass is indented under subclass 157. Subject matter wherein the structure includes significant means whereby the contacts are retained in an open or unoperated condition. | |
| 159 | Plural independently operable switches: | ||||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure comprises all of the
essential elements (as defined in the definition of subclass
2 above, and not merely by name only) of two or
more separate and distinct switch devices, which may or
may not employ common electromagnetic operating means; and
which if detached or removed from each of the other devices, is
capable of opening or closing an electrical circuit by means within the
device.
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| |||||||||||||||
| 160 | Interlocking: | ||||||||||||||
| This subclass is indented under subclass 159. Subject matter wherein the structure includes means whereby
the plural devices are caused to operate alternately, successively
or selectively, depending upon conditions either in the
circuits which are to be controlled, at the will of an operator, or
according to a predetermined cycle or schedule. This subclass
also contains those patents relating to means whereby one device is
prevented from operating while another is in operating position
as by an interlocking device.
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| |||||||||||||||
| 161 | With cooperative-actuating means: |
| This subclass is indented under subclass 160. Subject matter wherein the structure includes significant actuating means which acts cooperatively or through the interlocking means to control the operation of at least two separate circuit controlling devices. | |
| 162 | With unitary housing, support or flux path: | ||||||||||
| This subclass is indented under subclass 159. Subject matter wherein the structure includes means whereby
at least one or more separate devices are housed or supported in
common as a unit or whereby each shares a common magnetic flux path.
The common flux path may be excited by a plurality of windings or
other flux sources. The common support means may consist
of a base only.
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| |||||||||||
| 163 | With unitary or common magnetic flux source: | ||||||
| This subclass is indented under subclass 159. Subject matter wherein the structure includes significant
means whereby the plurality of devices are actuated through the
medium of a unitary or common magnetic flux source.
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| |||||||
| 164 | Manually or gravity-operated latch with electromagnetic trip: | ||||||
| This subclass is indented under subclass 2. Subject matter wherein the subject matter relates to structure
comprising a manual or gravity operated latching means combined
with at least one electromagnetically operated trip means whereby
the latch means is forcibly tripped upon the operation of the electromagnet.
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| |||||||
| 165 | Contact-actuating means unitary with latch or trip: | ||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure includes actuating
means for at least one set of contacts whose operation to open or
closed position is directly dependent upon the operation or position
of a latching or tripping device and in which the latching or tripping
device utilizes mechanical structural elements in common with a
toggle or other contact actuating means.
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| |||||||
| 166 | With latch- or trip-reset means: | ||||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure includes means whereby
either the latch or the latch tripping device may be reset to its
operative condition after having completed the transition to an
unoperative condition.
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| |||||||||
| 167 | Latching means: | ||||||||||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure includes specific details
of operating means whereby at least one set of contacts may be restrained
in one of two normal conditions (open or closed). The
latching means usually consists of structure adapted for mechanically
maintaining a contact actuating means, such as a toggle arrangement, armature
or other carrier, in a given position independently of
the magnetic control means so that once the contacts are closed, or
opened, the magnetizing current may be cut off and the
contacts remain in their opened or closed condition until a tripping action
takes place.
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| |||||||||||||||||||||
| 168 | With positive lock (against movement): | ||||||||||||||||
| This subclass is indented under subclass 167. Subject matter wherein the structure includes means whereby
the latching mechanism is positively locked or prevented from actuation
from a first condition to a second condition while the locking means
is operative.
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| |||||||||||||||||
| 169 | Plural or with auxiliary latch: | ||
| This subclass is indented under subclass 167. Subject matter wherein the latch structure comprises at
least two separate cooperative latching devices each under the influence
of a separate actuating means. One of the latching devices may
constitute the principle latch while at least one other constitutes
an auxiliary latch whose function is to restrain the principle latch.
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| |||
| 170 | Magnetically operated: | ||||||||||||
| This subclass is indented under subclass 167. Subject matter wherein the latching structure includes independent
magnetic means; such as a holding coil and armature, for
instance, whereby the latch is operated into, or
held in holding relationship with contact actuating means. Also
included in this subclass are devices where no mechanical latch
is used and which depend entirely upon magnetic means for directly
holding the contact arm or arms in closed position.
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| |||||||||||||
| 171 | Including spring-biasing or energy-storage means: | ||||||
| This subclass is indented under subclass 167. Subject matter wherein the latching structure includes spring
or other energy storing means whereby the latch is biased to either
operative or inoperative condition.
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| |||||||
| 172 | Tripping means: | ||||||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure includes significant
details of at least one means whereby a latch is released or tripped
from a first operative condition to a second nonoperative condition.
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| |||||||||||||||||
| 173 | Plural diverse (e.g., manual plus electromagnet): | ||
| This subclass is indented under subclass 172. Subject matter wherein the tripping structure includes significant
details of at least two or more separate and distinct tripping means
of diverse type; as for example, manual and magnetic, each
of which is operative independently of the other.
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| |||
| 174 | Magnetically operated: | ||||||
| This subclass is indented under subclass 172. Subject matter wherein the tripping means includes significant
magnetic structure whereby the tripping means is actuated.
The magnetic flux for operating the trip device may be derived from
the main magnetic circuit or from an independent magnetic source.
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| |||||||
| 175 | Utilizing hammer or other impacting means: |
| This subclass is indented under subclass 174. Subject matter wherein the magnetic trip actuating structure includes impact means whereby the latch is tripped by the delivery of a sharp hammer blow to some part thereof. The impact means usually consists of a reciprocating member (armature) actuated by a coil but may be an inertia means released by action of an armature. | |
| 176 | With adjusting or regulating means: | ||
| This subclass is indented under subclass 174. Subject matter wherein the claimed trip structure includes
adjusting or regulating means whereby some operative characteristic
of the tripping device, such as the current value required
for actuation, may be predetermined or automatically adjusted
or regulated.
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| |||
| 177 | Plural magnets or flux sources: | ||||||||||||||||||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure includes at least two
or more magnetic flux sources adapted to cooperate in the operation
of the same main circuit control contacts. Generally one
magnet operates to close the circuit and the other operates to open
the circuit or several magnets may operate simultaneously on an armature
system. One or more of the magnets may be a permanent
magnet.
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| |||||||||||||||||||||||||||||
| 178 | Of diverse electrical characteristics: | ||
| This subclass is indented under subclass 177. Subject matter wherein the magnets are specifically described
as having diverse electrical characteristics, for example
one may be voltage responsive while another is current responsive.
Also included here are systems in which one magnet winding is described
as in series with a source of current while another is shunt connected.
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| |||
| 179 | Of diverse magnetic characteristics (e.g., permanent plus electromagnet): | ||||||||||
| This subclass is indented under subclass 177. Subject matter wherein the magnets are specifically described
as having diverse magnetic characteristics. For example, one
or more may be a permanent magnet while another may be an electromagnet.
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| |||||||||||
| 180 | With common core or single armature: | ||||||||
| This subclass is indented under subclass 177. Subject matter wherein the structure includes a single core
or armature common to at least two of the magnet means.
The armature structure may comprise a single plunger reciprocally related
to a plurality of coils or may be of the hinged or pivoted type
actuated by the coils in common.
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| |||||||||
| 181 | Pivoted armature: | ||||||||||||||||
| This subclass is indented under subclass 180. Subject matter wherein the single armature is specifically
a pivoted armature.
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| |||||||||||||||||
| 182 | Magnetic fields opposing (e.g., differential): | ||||||
| This subclass is indented under subclass 180. Subject matter wherein the plurality of magnetic coils or
other flux sources are wound upon a common core in such a manner
or otherwise arranged so that their magnetic flux fields are opposing
and whereby the armature or armatures are acted upon by a resultant
flux field which may be zero or the difference between two or more
fields. The devices classified here are of the type commonly
known as differential type. The two or more windings are
so connected that when energized together their magnetic effects
neutralize each other and no effective flux is produced.
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| |||||||
| 183 | Magnetic fields or torques acting alternately in opposite directions: | ||
| This subclass is indented under subclass 177. Subject matter wherein the torque generated by at least
two magnetic flux sources act in opposition to each other or in
opposite directions. The plurality of flux sources may
be energized simultaneously or alternately whereby a contact actuating
means may be operated first toward one position and then toward
a second position as from open to closed and vice versa.
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| |||
| 184 | With plural reciprocating armatures aligned or rigidly connected: | ||||
| This subclass is indented under subclass 177. Subject matter wherein at least two or more magnetic coils
are provided with reciprocating core armatures which operate in
alignment along a common axis and which may or may not be rigidly
mechanically connected.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 185 | Contact-actuating means: | ||||||||||||
This subclass is indented under subclass 2. Subject matter wherein the significant structure comprises
apparatus in addition to, but actuated by, an
armature or armatures whereby at least one movable contact is caused
to be actuated from a first position to a second position in relation
to a fixed contact resulting in an electrical circuit being completed
or broken.
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| |||||||||||||
| 186 | Plural or combined (e.g., manual with other): | ||||||||||
| This subclass is indented under subclass 185. Subject matter wherein the significant contact actuating
means includes at least one manual means such as a push button or
operating lever, whereby the movable contact or contacts
are actuated from a first to a second position. The electromagnetic
means may act to maintain the contacts closed after actuation by
the manual means.
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| |||||||||||
| 187 | Unitary with armature: | ||||
| This subclass is indented under subclass 185. Subject matter wherein at least one significant contact
actuating means is structurally combined with armature in such a
manner as to form a physical entity therewith and in which both
are claimed.
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| |||||
| 188 | Snap-action: | ||||||
| This subclass is indented under subclass 185. Subject matter wherein the significant actuating structure
includes means whereby the contact motion is caused to take place
abruptly and is not dependent on the rate of movement of the armature.
The contact movement is usually accomplished by a spring connection
between the operator and the contact in such a manner that the
initial movement of the armature or other actuating means places
the spring under tension until released whereupon the movable contact
is snapped to open or closed position by the energy stored in the
spring.
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| |||||||
| 189 | Mechanical linkage: | ||||||||||
| This subclass is indented under subclass 185. Subject matter wherein the significant contact actuating
structure comprises mechanical linkage operative between an armature
and at least one movable contact whereby motion of the armature
is transmitted to the movable contact.
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| |||||||||||
| 190 | Including cam, roller or eccentric means: | ||||||
| This subclass is indented under subclass 189. Subject matter wherein the mechanical linkage comprises
at least one cam, roller or eccentric device whereby the
force applied to open or close a movable contact may be varied during the
opening or closing operation, or the armature may be held
in a predetermined position upon actuation.
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| |||||||
| 191 | Compound motion device (e.g., toggle): | ||||||||||
| This subclass is indented under subclass 189. Subject matter wherein the mechanical linkage comprises
structure whereby the force applied to a moving contact is the result
of a motion in a first direction converted to a motion in a second
direction; for example, a linear first motion may
be converted to a rotary motion about a fixed origin or pivot as
by a toggle linkage.
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| |||||||||||
| 192 | With biasing means (open or closed): | ||||||||||||
| This subclass is indented under subclass 185. Subject matter wherein the significant contact actuating
structure includes spring biasing means whereby the movable contact
or contacts are positively biased toward one of two positions independently
of the armature means. The biasing may be toward either
the open or closed position and is operative to assist an armature
or other actuating means in the opening or closing operation.
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| |||||||||||||
| 193 | With vibration-, bounce- or chatter-prevention means: | ||||||||
| This subclass is indented under subclass 185. Subject matter wherein the contact actuating structure includes
means whereby the contacts are prevented from vibrating, rebounding
or chattering when in the closed position or during the closing
operation. The apparatus generally comprises compression
means, inertia weights or other similar structure for absorbing the
kinetic energy of the moving parts.
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| |||||||||
| 194 | With pressure-maintaining or adjusting means: | ||||||||
| This subclass is indented under subclass 185. Subject matter wherein the contact actuating structure includes
additional means whereby a predetermined or constant pressure is
applied to the contacts while in the circuit closing position or
whereby such contact pressure may be adjusted.
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| |||||||||
| 195 | Magnetic or electrodynamic force: | ||||
| This subclass is indented under subclass 194. Subject matter wherein the pressure maintaining or adjusting
means comprises magnetic means or structure whereby an electrodynamic force
established between two current carrying conductors is utilized
to establish a pressure tending to maintain the contacts closed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 196 | Contact composition or structure: | ||||||||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure includes significant
details of the composition of matter or mechanical structure of
the contact assembly, its support on or attachment to the
magnetic device.
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| |||||||||||||||||||
| 197 | Adjustable or readily detachable: | ||
| This subclass is indented under subclass 196. Subject matter wherein the contact structure comprises significant
means whereby the contact or contacts are readily detachable or adjustable
relative to the magnetic structure, the armature or each
contact relative to the other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 198 | Convertible from normally open to normally closed and vice versa: | ||
| This subclass is indented under subclass 197. Subject matter wherein the subject matter relates to means
whereby the device may be adapted to operate as a normally open
or closed contact switch.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 199 | Printed circuit: | ||||||||||||
| This subclass is indented under subclass 196. Subject matter wherein the contact structure, or at
least a part thereof, is of the preformed surface type, which
is usually formed by depositing a metallic conducting material upon
an insulating surface, by etching away part of a metal
coated insulating surface, or by printing on a conductive
layer, etc.
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| |||||||||||||
| 200 | Pivoted or relatively movable independently of the armature: | ||||
| This subclass is indented under subclass 196. Subject matter wherein the structure includes at least one
movable contact device which is pivotally or otherwise attached
to an armature in such a manner as to be movable relative thereto and
independently thereof. The connection usually consists
of a spring biased pivotal means but may comprise any lost motion
connection providing for relative movement.
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| |||||
| 201 | With arc-suppression or extinguishing means: | ||||||||
| This subclass is indented under subclass 2. Subject matter wherein the significant structural details
include means for preventing the formation of electric arcs when
a circuit is broken or smothering an arc once it forms.
The circuit may be broken at a plurality of points as by the provision
of auxiliary arcing contacts shunting the main contacts or by means
of a magnetic coil arranged adjacent the contacts wherein a magnetic
field is generated which tends to repel and extinguish the arc.
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| |||||||||
| 202 | With housing or support means: | ||||||||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the significant structural details
include means for housing, enclosing or supporting an electromagnetic
switch device. The housing or support means may include
magnetic or electric shielding means or other details of construction
whereby the casing or support contributes to the operation of the
switch. One example of the devices to be found here are
the so-called "lamp socket" switches.
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| |||||||||||||||||||
| 203 | With armature structure: | ||||||||||||||||||||||||||||
| This subclass is indented under subclass 2. Subject matter wherein the structure includes significant
details of armature structure or composition of matter with other
switch structure in conventional language, as by name only, but
which is sufficient to restrict the device to this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||||||||||||||||
| 204 | Through conductor type (i.e., conductor field actuates armature): | ||||||
| This subclass is indented under subclass 2. Subject matter wherein at least a portion of the magnetic
actuating structure of the switch device, usually the flux
source or winding, consists of a portion of a bus bar or
other conductor which comprises an integral part of the external
circuit which is to be controlled. For example; the
switch device may be directly attached to a bus bar in such a manner
as to utilize the magnetic flux field surrounding the bus bar upon
the passage of current therethrough to control an armature or other
contact actuating means.
SEE OR SEARCH CLASS:
| |||||||
| 205 | PERMANENT MAGNET-ACTUATED SWITCHES: | ||||||||||||||||||||||||||||||||
| This subclass is indented under the class definition. Subject matter wherein the structure includes switch means
whereby the actuation of the main contacts from an operative to
an inoperative position or vice versa is entirely accomplished by
means of permanent magnets.
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| |||||||||||||||||||||||||||||||||
| 206 | Plural switches: | ||||||
This subclass is indented under subclass 205. Subject matter wherein the claimed structure comprises all
the essential elements of two or more separate and distinct switch
devices which may or may not employ common permanent magnet operation
means and which if detached or removed from each of the other devices
is capable of opening or closing an electrical circuit by means
within the device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 207 | Plural magnets: | ||||||||
This subclass is indented under subclass 205. Subject matter wherein the permanent magnet means comprises
a plurality of at least two or more such magnets.
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| |||||||||
| 208 | Thermomagnetic: | ||||
| This subclass is indented under subclass 205. Subject matter wherein the magnetic structure is specifically
recited as consisting of material whose magnetic properties are
responsive to temperature conditions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 209 | MAGNETS AND ELECTROMAGNETS: | ||||||||||||||||||||||||||||
This subclass is indented under the class definition. Subject matter comprising magnets, which may be
permanent magnets, electromagnets or a combination of the
two types, or electromagnets with armatures, designed
or arranged to perform external mechanical work.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||||||||||||||||
| 210 | Electron or ion beam deflecting type: | ||||||||||||||||||||
This subclass is indented under subclass 209. Subject matter relating to electronic or ionic beam deflecting
magnets.
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| |||||||||||||||||||||
| 211 | With magnetic shunt: | ||||
This subclass is indented under subclass 210. Subject matter wherein the electronic or ionic beam deflecting
magnet includes a magnetic shunt path for the magnetic flux produced
by the deflecting magnet. The shunt magnetic path is an
auxiliary magnetic path in addition to the main magnetic path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 212 | With adjustable magnetic element (e.g., to change the air gap, or its position on the cathode ray tube): | ||||
| This subclass is indented under subclass 210. Subject matter wherein the magnetic elements of the electronic
or ionic beam deflecting magnets are adjustable with respect to
each other and/or with respect to the tube to vary the
position of the electronic or ionic beam.
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| |||||
| 213 | With coil structure: | ||||||
| This subclass is indented under subclass 210. Subject matter including significant structural details
of a coil of the magnetic deflecting means.
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| |||||||
| 214 | With electric or magnetic-shielding means: | ||||||||
| This subclass is indented under subclass 213. Subject matter including electric or magnetic shielding
means in combination with the coil structure for shielding at least
part of the beam deflecting means from external electric or magnetic
fields, or for preventing the coil of the deflecting means
from emanating undesired electric or magnetic fields.
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| |||||||||
| 215 | Magnetostrictive-type device: | ||||||||||||||
This subclass is indented under subclass 209. Subject matter wherein a portion of the magnet or electromagnet
includes material having magnetostriction properties.
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| |||||||||||||||
| 216 | Superconductive type: | ||||||||||||
This subclass is indented under subclass 209. Subject matter wherein the magnet or electromagnet has a
superconductive element included therein as an active element of
the magnet.
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| |||||||||||||
| 217 | Temperature-responsive type (e.g., temperature compensation means): | ||||||||||||||||
This subclass is indented under subclass 209. Subject matter wherein the magnet or electromagnet is designed
or constructed to change its operating characteristics responsive
to variation in temperature, or includes temperature responsive
elements to effect such a change.
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| |||||||||||||||||
| 218 | With time-delay means: | ||||||||||
This subclass is indented under subclass 217. Subject matter including means to produce a predetermined
time interval between the energizing instant and the time of operation
of the magnet or electromagnet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 219 | Combined with diverse-type art device: |
| This subclass is indented under subclass 209. Subject matter wherein the magnet or electromagnet is combined with devices or structures of other art classes, the art device being claimed so broadly as to form no basis for classification in the art device class. | |
| 220 | With magneto-mechanical motive device (e.g., electromagnet with armature): | ||||
This subclass is indented under subclass 209. Subject matter including one or more armatures operated
by one or more electromagnets.
| |||||
| 221 | Frequency-responsive type: | ||||||||||||||||
This subclass is indented under subclass 220. Subject matter wherein the armature is actuated when the
electromagnet is excited with a supply signal of a predetermined
frequency or range of frequencies.
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| |||||||||||||||||
| 222 | With relatively movable coil and permanent magnet (e.g., D'Arsonval type) position on the cathode ray tube: | ||||||||
This subclass is indented under subclass 220. Subject matter including a permanent magnet and a coil suspended
or positioned within the magnetic field of the permanent magnet
for relative movement with respect to the permanent magnet; the
relative movement being caused by interaction of a magnetic field
produced in the coil and the magnetic field of the permanent magnet.
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| |||||||||
| 223 | With relatively movable conductors (e.g., dynamometer): | ||||||||||||
This subclass is indented under subclass 220. Subject matter including plural conductors mounted such
that at least one conductor is movable relative to the other.
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| |||||||||||||
| 224 | Induced current-type movable conductor (e.g., eddy current member): | ||||||
This subclass is indented under subclass 223. Subject matter wherein one of the relatively movable conductors
induces a current by electromagnetic induction into at least one
of the other conductors.
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| |||||||
| 225 | Rotating disk: | ||||||||
| This subclass is indented under subclass 224. Subject matter wherein one movable conductor is a rotating
disk.
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| |||||||||
| 226 | Short-circuited winding: | ||||||||||||
This subclass is indented under subclass 224. Subject matter in which one of the conductors is a short
circuited coil or winding.
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| |||||||||||||
| 227 | Saturable magnetic type: | ||||
| This subclass is indented under subclass 220. Subject matter wherein the core or armature is designed
to magnetically saturate within the normal current operating range
of the device.
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| |||||
| 228 | With motion-conversion means (e.g., reciprocating to rotary motion): | ||||||||||||||||||
This subclass is indented under subclass 220. Subject matter including means to convert the motion of
the armature into an effective motion of a different type.
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| |||||||||||||||||||
| 229 | With permanent magnet: | ||||||||||||||
| This subclass is indented under subclass 220. Subject matter wherein the magnetomechanical motive device
includes a permanent magnet in combination with the electromagnet.
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| |||||||||||||||
| 230 | Polarized electromagnet: | ||||
| This subclass is indented under subclass 229. Subject matter wherein the permanent magnet is combined
with the electromagnet such that the movement of the armature is
responsive to the direction of current flow in the armature controlling
circuit.
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| |||||
| 231 | Varying alternating current amplitude responsive: | ||||||||||||||
This subclass is indented under subclass 230. Subject matter wherein the armature or mechanical means
which is adapted to be moved by the polarized electromagnet, is
of a type movable to varying positions between two extreme positions, responsive
to the intensity of the alternating current energizing signal.
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| |||||||||||||||
| 232 | With plural armatures: | ||||||||||
| This subclass is indented under subclass 230. Subject matter wherein the polarized electromagnet actuates
plural armatures.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 233 | With armature-locking means: | ||||||||||||||
| This subclass is indented under subclass 232. Subject matter including means to lock at least one of the
armatures of the polarized electromagnet in either the open or closed
position, responsive to the energization of the electromagnet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||
| 234 | With reversible magnetic flux-type movement (e.g., bistable type): | ||||||||||||
This subclass is indented under subclass 230. Subject matter wherein the electromagnet is energized by
direct current signal, the polarity of which determines
the direction of flux flow and consequently the movement of the
armature.
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| |||||||||||||
| 235 | With vibrating reed or spring bar-type armature: | ||||||||||
| This subclass is indented under subclass 230. Subject matter wherein the armature of the polarized electromagnet
is a vibrating reed or spring bar type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 236 | With a shunt path for magnetic flux: | ||||||||||||
| This subclass is indented under subclass 220. Subject matter wherein the electromagnet includes at least
two magnetic flux paths, one of which is a secondary or
shunt flux path.
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| |||||||||||||
| 237 | Adjustable: | ||||
| This subclass is indented under subclass 236. Subject matter wherein the reluctance of the shunt path
is adjustable to vary the magnetic flux flow therethrough.
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| |||||
| 238 | With auxiliary armature-movement control means (e.g., manual): | ||||||||
This subclass is indented under subclass 220. Subject matter including auxiliary means to move the armature, in
addition to the electromagnetic means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
| 239 | With time delay armature-movement control means: | ||||||||||||||||||||
This subclass is indented under subclass 220. Subject matter including means to produce a predetermined
time interval between the energizing instant and the time of operation
of the electromagnet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||||||||
| 240 | Dashpot type: | ||||||||
| This subclass is indented under subclass 239. Subject matter wherein a dashpot means is used to provide
the time delay.
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| |||||||||
| 241 | Auxiliary control coil: | ||
| This subclass is indented under subclass 239. Subject matter wherein an auxiliary control coil or magnet
is used to provide the time delay.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 242 | With plural armatures selectively retarded: | ||||||
| This subclass is indented under subclass 239. Subject matter including plural armatures with time delay
means for delaying different armatures at different time intervals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 243 | Alternating current type: | ||||||||||||||
| This subclass is indented under subclass 220. Subject matter wherein the electromagnet and armature is
particularly adapted for operation by alternating current.
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| |||||||||||||||
| 244 | Flux phase displacement or varying means: | ||||||||||||
This subclass is indented under subclass 243. Subject matter including means to cause a phase shift between
the magnetic flux produced in plural windings or in separate portions of
the electromagnet.
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| |||||||||||||
| 245 | Shading coil: | ||||||||||
This subclass is indented under subclass 244. Subject matter wherein the flux phase displacement is obtained
by the use of a shading coil.
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| |||||||||||
| 246 | Plural winding type: | ||||
| This subclass is indented under subclass 244. Subject matter having plural windings in the electromagnet
and having means to apply current of different phase to the different
windings.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 247 | With chatter- or noise-preventing means: | ||||||||||||||||||||
This subclass is indented under subclass 243. Subject matter including means to prevent or decrease chatter
or hum noise of the armature.
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| |||||||||||||||||||||
| 248 | Spring or cushion-type vibration absorber: |
| This subclass is indented under subclass 247. Subject matter wherein the chatter or noise preventing means include spring or cushion type vibration absorbers. | |
| 249 | Special armature construction or mounting means (e.g., to assure positive seating of armature): | ||||||
| This subclass is indented under subclass 247. Subject matter wherein the armature is specially constructed
or mounted to prevent vibration noise.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 250 | Coil construction or mounting means: | ||||
| This subclass is indented under subclass 243. Subject matter including significant details of the alternating
current coil construction or coil mounting means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 251 | With plunger-type armature: | ||||||||
| This subclass is indented under subclass 243. Subject matter wherein the armature is in the form of a
solenoid core or plunger.
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| |||||||||
| 252 | With vibrating armature: | ||||||
This subclass is indented under subclass 243. Subject matter wherein the armature of the alternating current
electromagnet is mounted to have a back and forth or vibration movement responsive
to the alternation of the alternating current.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 253 | With armature latch means (e.g., means to retain armature in open or closed position): | ||||||||||||||||||||||||
This subclass is indented under subclass 220. Subject matter including armature latch means responsive
to movement of an armature to latch or hold said armature or another
armature in a particular position.
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| |||||||||||||||||||||||||
| 254 | With latch-control winding: | ||||||||
This subclass is indented under subclass 253. Subject matter wherein the armature latch means is positioned
in the latch or unlatch position by the attractive or repulsive
force of an energized coil winding.
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| |||||||||
| 255 | With plunger-type armature: | ||||||||||||||||
| This subclass is indented under subclass 220. Subject matter wherein the armature is in the form of a
core or plunger mounted for movement within the coil or solenoid
of the electromagnet.
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| |||||||||||||||||
| 256 | Plural coils controlling a single armature: | ||||||||||
This subclass is indented under subclass 255. Subject matter wherein the electromagnet has plural coils
that control a single plunger type armature.
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| |||||||||||
| 257 | With shock-absorbing means (e.g., means to absorb the shock of armature or plunger): | ||||||||||||||
This subclass is indented under subclass 255. Subject matter including means to absorb the shock of the
armature when coming to rest against an armature stop, thereby
preventing vibration of the armature.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||
| 258 | With armature stroke adjustment: | ||||||
This subclass is indented under subclass 255. Subject matter including means to adjust the distance of
the armature movement when the electromagnet is energized.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 259 | Plural plungers: | ||||||
This subclass is indented under subclass 255. Subject matter including plural plunger type armatures.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 260 | With sealed enclosure (e.g., dust or moistureproof): | ||||||||||
This subclass is indented under subclass 255. Subject matter wherein the plunger type armature of the
electromagnet is enclosed in a sealed moisture or dust proof enclosure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 261 | Armature structure or material: | ||||||
| This subclass is indented under subclass 255. Subject matter including details of the structure of the
plunger type armature, details of the material of which
the armature is made, or details of both the structure
and the material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
| 262 | With centering or aligning or guiding means: |
| This subclass is indented under subclass 261. Subject matter including means to center or align the plunger type armature in the solenoid coil or means to guide the plunger during its movement relative to the coil when the coil is energized. | |
| 263 | With plunger rotation preventing means (e.g., means to prevent undesired rotation of the plunger during movement): | ||
| This subclass is indented under subclass 261. Subject matter including means in combination with the plunger
type armature to prevent rotation of the armature relative to the
solenoid coil or casing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 264 | Sectional plunger: |
| This subclass is indented under subclass 261. Subject matter wherein the plunger type armature includes a plurality of sections, at least one of said sections being movable relative to another section. | |
| 265 | Plural armatures actuated by single electromagnetic coil: | ||||||||||
| This subclass is indented under subclass 220. Subject matter wherein plural armatures are located with
respect to a coil such that each armature is operated when the coil
is energized.
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| |||||||||||
| 266 | Plural coils or magnets control armature movement: | ||||||||||||||||||||||||||
This subclass is indented under subclass 220. Subject matter wherein the electromagnets includes plural
coils or magnets arranged to operate at least one armature.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||||||||||||||
| 267 | With plural armatures: | ||||||||||||
This subclass is indented under subclass 266. Subject matter including plural armatures.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||
| 268 | Coils or magnets being separately or selectively controllable: | ||||
| This subclass is indented under subclass 266. Subject matter wherein the plural coils of the electromagnet
can be energized independently of each other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
| 269 | With dynamically balanced armature: | ||||||||||||
| This subclass is indented under subclass 220. Subject matter including: armature mounting means; means
forming part of the armature; means operating with the
armature or a combination of these means to balance the armature so
that it is insensitive to acceleration or deceleration.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
| 270 | Armature-mounting means: | ||||||||||
This subclass is indented under subclass 220. Subject matter wherein the subject matter includes details
of the armature mounting means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 271 | With armature bounce or vibration-preventing means: | ||||||||||||||||||||||
This subclass is indented under subclass 270. Subject matter including means to prevent vibration of the
armature when it contacts an armature stop.
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| |||||||||||||||||||||||
| 272 | Rotating disk or cylindrical armature: | ||||||||||||||
This subclass is indented under subclass 270. Subject matter wherein the armature is in the form of a
disk or a cylindrical member and is mounted so that when the electromagnet
is energized, the armature revolves on its support or about
its center, within a plane perpendicular to the support
means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||
| 273 | With armature-adjusting means (e.g., means to adjust the relative distance between core and armature): | ||||||||||
This subclass is indented under subclass 270. Subject matter including means to adjust the position of
the armature relative to the core or armature stop means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
| 274 | With armature-biasing means or bias-adjustment means: | ||||||||||||||||
This subclass is indented under subclass 270. Subject matter including significant details of the armature
biasing means or including significant means for adjusting the armature
biasing means.
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| |||||||||||||||||
| 275 | Hinge joint type armature-mounting means: | ||
| This subclass is indented under subclass 270. Subject matter wherein the armature is attached to its support
means by a hinge type mounting arrangement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
| 276 | Pivot support type armature-mounting means: | ||||||||||||
This subclass is indented under subclass 270. Subject matter wherein the armature is mounted upon a support
such that it has a pivotal movement toward or away from the magnetic
core or stop means when energized.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
| 277 | With shock absorption, vibration or bounce-preventing means: | ||||||||||||
This subclass is indented under subclass 220. Subject matter including means to prevent vibration or shock
in the electromagnet.
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| |||||||||||||
| 278 | With casing or enclosure: | ||||||||||||||||||
| This subclass is indented under subclass 220. Subject matter including structure of a casing or enclosure
for the electromagnet.
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| |||||||||||||||||||
| 279 | Armature shape, structure or material: | ||||||||||||||
| This subclass is indented under subclass 220. Subject matter including significant details of the armature
shape, structure or material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||
| 280 | Balls, filings or granular material: |
| This subclass is indented under subclass 279. Subject matter wherein the significant armature structure comprises spherical balls or elements, metallic filings or fine granular material. | |
| 281 | Core or pole shape, structure or material: | ||||||||||||
| This subclass is indented under subclass 220. Subject matter including significant magnetic core or pole
shape, structure or material.
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| |||||||||||||
| 282 | Coil shape, structure or material: | ||||||||||
| This subclass is indented under subclass 220. Subject matter including significant details relating to
the shape or structure of the coil or to the material of the coil.
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| |||||||||||
| 283 | Blade sharpening or conditioning type magnets: | ||||||||||||
This subclass is indented under subclass 209. Subject matter including magnetic means for maintaining
a blade such as a knife or razor blade in a sharp, burr
free condition.
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| |||||||||||||
| 284 | For magnetizing or demagnetizing: | ||||||||
| This subclass is indented under subclass 209. Subject matter including means for magnetizing or demagnetizing
magnets or electromagnets.
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| |||||||||
| 285 | Work or object holding type: | ||||||||||||||||
This subclass is indented under subclass 209. Subject matter including magnetic means for holding a device, which
is separate from the magnetic means, in a desired position.
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| 286 | With workpiece to magnet adapted or fixture (e.g., to bridge flux): | ||||
This subclass is indented under subclass 285. Subject matter including means adapted to be placed between
the magnet and the workpiece or the object being held by the magnet.
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| 287 | Angularly adjustable fixture: | ||
This subclass is indented under subclass 286. Subject matter wherein the holding magnet chuck is adjustable
to various angles so that the workpiece can be held at various elevations.
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| 288 | Rotary-type magnetic chuck (permanent or electromagnet type): | ||||
This subclass is indented under subclass 285. Subject matter wherein the holding magnet is a magnetic
chuck or work-holding type which can be rotated while holding
the workpiece.
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| 289 | Electromagnet type (e.g., electromagnetic chuck): | ||||||
This subclass is indented under subclass 285. Subject matter wherein the holding magnet is an electromagnet.
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| 290 | With circuit control means: | ||||||
| This subclass is indented under subclass 289. Subject matter wherein the electromagnet type work holder
includes means to control the magnetic flux of the electromagnet
such as, for example, shunt means or circuit controlling switch
means.
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| 291 | Lifting or attracting type (e.g., for lifting pigiron or pulling hairpins): | ||||||||||
| This subclass is indented under subclass 289. Subject matter including electromagnets which are utilized
for lifting articles such as pig-iron or for pulling articles
such as hair pins from the hair.
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| 292 | Hermetically sealed or moisture-proofed: | ||||||||||||||||
| This subclass is indented under subclass 291. Subject matter wherein the lifting or pulling type electromagnet
is hermetically sealed to keep moisture, dust or other
foreign particles from the magnet elements.
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| 293 | Hand-held type: | ||
| This subclass is indented under subclass 291. Subject matter wherein the lifting or pulling magnet is
enclosed within a casing such that it can be held by hand when it
is in use.
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| 294 | With outer casing or housing: | ||||||||||||||||
This subclass is indented under subclass 291. Subject matter wherein the lifting or pulling electromagnet
is enclosed in a special housing or casing.
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| 295 | With magnetic-hold control means (e.g., means to control the hold strength): | ||||||||||||
This subclass is indented under subclass 285. Subject matter including means to control or vary the holding
strength of the magnet.
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| 296 | Magnet structure or material: | ||||||||||||
| This subclass is indented under subclass 209. Subject matter including magnets or electromagnets, per
se, with significant details of magnet structure, shape
or configuration, or with details of the type of material
of the magnet.
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| 297 | Core structure: | ||||||||||||||||
| This subclass is indented under subclass 296. Subject matter including significant details of the magnetic
core structure or material.
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| 298 | Movable or adjustable cores: | ||||||||||||||||
This subclass is indented under subclass 297. Subject matter including means to adjust the position of
the magnetic core element to vary the airgap spacing.
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| 299 | Coil structure or material: | ||||||||
| This subclass is indented under subclass 296. Subject matter including significant details of the magnetic
coil structure or material.
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| 300 | With cooling means: | ||||
| This subclass is indented under subclass 299. Subject matter including, means to cool the coil
of the electromagnet.
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| 301 | With electric- or magnetic-shielding means: | ||||||||
| This subclass is indented under subclass 296. Subject matter including electric or magnetic shielding
means in combination with the magnet structure for shielding at
least part of the magnet from electric or magnetic fields, or
for preventing the coil of the magnet from emanating undesired electric
or magnetic fields.
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| 302 | Permanent magnets: | ||||||||||||||||||||||||||
| This subclass is indented under subclass 296. Subject matter wherein the particular magnet structure relates
to permanent magnets.
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| 303 | Enclosed in flexible plastic, cloth or tape: | ||||||||
This subclass is indented under subclass 302. Subject matter wherein the permanent magnetic material is
enclosed or embedded within a flexible plastic, cloth or
tape.
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| 304 | With flux leakage-reducing means: |
| This subclass is indented under subclass 302. Subject matter wherein permanent magnets are mounted or arranged to prevent or substantially reduce stray leakage flux across the airgap. | |
| 305 | Magnetic plug type (e.g., crankcase plug): | ||||||
| This subclass is indented under subclass 302. Subject matter wherein the permanent magnet is in the form
of a plug adapted to be threaded or otherwise inserted into a liquid
containing vessel, such as a crankcase, for collecting metallic
particles suspended in the liquid for removal from the crankcase
or container.
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| 306 | Plural magnets: | ||
| This subclass is indented under subclass 302. Subject matter including plural permanent magnets.
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