| Class 219 | ELECTRIC HEATING |
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![[List of Pre Grant Publications for class 219 subclass 600]](../as.gif) | ![[List of Patents for class 219 subclass 600]](../ps.gif) | 600 | INDUCTIVE HEATING |
| | 601 |  With diverse-type heating |
| | 602 | Metal working |
| | 603 |  Bonding |
| | 604 |  Container sealing |
| | 605 | Wire (e.g., cable, etc.) |
| | 606 | Ring |
| | 607 | Tube (i.e., pipe) |
| | 608 |  With electrical control (e.g., speed, temperature, gaging thickness, etc.) |
| | 609 | Layering (e.g., coating, lining, etc.) |
| | 610 | With preheating or postheating |
| | 611 | Plural (e.g., end to end, etc.) |
| | 612 | Seam bonding |
| | 615 | Brazing (e.g., cladding, etc.) |
| | 616 | Soldering |
| | 617 | Welding |
| | 618 | With heat exchange |
| | 619 | Roller (e.g., godet, etc.) |
| | 620 | Cooking |
| | 621 | Utensil (e.g., pot, pan, etc.) |
| | 622 | With support |
| | 624 | Core or coil structure |
| | 625 | Intermediate member condition responsive |
| | 628 | Fluid or liquid heater |
| | 632 | With cooling arrangement |
| | 633 | Bonding (e.g., nonmetallic, etc.) |
| | 634 | Susceptor |
| | 635 | Specific heating application |
| | 636 | Wire (e.g., cable, etc.) |
| | 637 | Rod |
| | 640 | Gear |
| | 641 | Valve |
| | 642 | Ring or link |
| | 643 | Tube (i.e., pipe) |
| | 645 | Strip (e.g., sheet, etc.) |
| | 646 | Slab (e.g., ingot, etc.) |
| | 647 | With workpiece support |
| | 648 | Levitation |
| | 649 | Materials |
| | 650 | With monitoring (e.g., regulating, etc.) |
| | 651 | Gas environment |
| | 652 | Rotation of workpiece |
| | 653 | Conveyor |
| | 659 | Pressure applicator (e.g., clamp, etc.) |
| | 660 | With power supply system |
| | 661 | Power switching |
| | 670 | With specific transformer |
| | 671 | With plural load inductors |
| | 672 | Specific inductor configuration |
| | 678 | MICROWAVE HEATING |
| | 679 | With diverse device |
| | 680 | With diverse-type heating |
| | 686 | Gas environment (e.g., pressurized, etc.) |
| | 687 | Fluid heater |
| | 690 | Waveguide applicator |
| | 698 | Tunnel furnace |
| | 702 | With control system |
| | 703 | Defrost |
| | 704 | Load condition sensor |
| | 705 | Plural diverse types |
| | 706 | By ultrasonic or acoustic |
| | 707 | Gas or vapor |
| | 708 | Weight |
| | 709 | Field intensity/reflection |
| | 710 | Temperature |
| | 714 | Remote (e.g., card, etc.) |
| | 715 | Power switching |
| | 719 | With timer |
| | 720 | With display or alarm |
| | 721 | Starting circuitry |
| | 722 | Interlock circuitry and structure |
| | 725 | Cookware (e.g., vessel, utensil, etc.) |
| | 726 | With food mixer |
| | 727 | Expandable |
| | 728 | With field modifier |
| | 730 | With heat exchange (e.g., susceptor, etc.) |
| | 732 | With stand or handle |
| | 733 | With drainage |
| | 734 | With cover |
| | 736 | Radiation protection |
| | 745 | Field modification |
| | 746 | With power feed structure |
| | 751 | Mixer (e.g., rotating stirrer, etc.) |
| | 752 | By load support movement |
| | 756 | Enclosed cavity structure |
| | 759 | With heat exchange (e.g., susceptor, etc.) |
| | 760 | With specific transformer |
| | 761 | With specific generator |
| | 762 | Load support |
| | 764 | CAPACITIVE DIELECTRIC HEATING |
| | 765 | Bonding |
| | 770 | Specific heating application |
| | 774 | With workpiece support |
| | 778 | With power supply system |
| | 780 | Specific electrode configuration |
| | 50 | METAL HEATING (E.G., RESISTANCE HEATING) |
| | 51 | Chain |
| | 53 | Rail bond |
| | 56 | Wire, rod, or bar bonding |
| | 59.1 | Of cylinders (e.g., pipes and tubes) |
| | 60R | Electric arc |
| | 61.1 | Having internal support means |
| | 61.2 | Utilizing high frequency resistance heating |
| | 61.3 | With edge guidance means |
| | 61.4 | With adjustable electrode means |
| | 61.5 | With condition responsive control of the welding process |
| | 61.6 | Using three or more electrodes |
| | 61.7 | With cooling means |
| | 62 | Helical seam |
| | 63 | Rotary transformer part |
| | 64 | Container (e.g., cans) |
| | 65 | Nonrotary electrode (e.g., oscillating) |
| | 66 | Inside electrode |
| | 67 | Resistance heating methods |
| | 68 | Cutting or disintegrating (e.g., machining engraving) |
| | 71 | Liquid electrode |
| | 72 | Nonatmospheric environment at hot spot (e.g., resistance weld under oil, vacuum) |
| | 73 | Slag (e.g., submerged arc) |
| | 74 | Gas supply (e.g., by ingredient of electrode, by external source) |
| | 76.1 | For deposition welding (e.g., coating or building up) |
| | 76.11 | With cooling means |
| | 76.12 | Of multiple distinct layers |
| | 76.13 | By spark discharge |
| | 76.14 | By electric arc |
| | 76.17 | By resistance heating |
| | 77 | Cutting edges of tools |
| | 78.01 | For bonding with pressure (e.g., resistance welding) |
| | 85.1 | Brazing or soldering |
| | 85.12 | Utilizing radiant energy |
| | 85.14 | With filler metal in circuit |
| | 85.16 | Electrically heated tool (e.g., electrodes, heaters, etc.) |
| | 85.17 | Furnaces or enclosures |
| | 85.18 | Wire lead bonders |
| | 85.19 | Machine for predetermined operation |
| | 85.2 | Fluxes or solders |
| | 85.21 | Solder preforms |
| | 85.22 | Methods |
| | 78.02 | By solid-state bonding (e.g., diffusion) |
| | 78.11 | Honeycomb |
| | 78.13 | With additional heating device |
| | 78.14 | With work cleaning means |
| | 78.15 | With work cutting means |
| | 78.16 | With work deforming means (e.g., tube sealing) |
| | 79 | With conveyer for workpiece |
| | 81 | Roller electrode |
| | 86.1 | By spot bonding |
| | 86.21 | With hand-manipulative portable devices |
| | 86.22 | With separately applied pressure and heat |
| | 86.23 | With welding pressure controlled by the work support |
| | 86.24 | With work orientation means |
| | 86.25 | With significant electrode support |
| | 86.31 | Having cooling means |
| | 86.32 | Having magnetic force actuated electrode |
| | 86.33 | Having adjustment means |
| | 86.8 | Having interchangeable welding electrodes |
| | 86.9 | For one-face welding |
| | 87 | Multiple spot type |
| | 88 | Electrode positionable along fixed bus bar (e.g., reaction bar type) |
| | 89 | Fluid pressure actuated electrode |
| | 90 | Plier or tong type |
| | 91.1 | With condition responsive control of the welding process |
| | 91.2 | Methods |
| | 95 | Percussive |
| | 97 | Flash |
| | 101 | Butt |
| | 108 | Systems of current supply |
| | 109 | With indicator (e.g., recorder) |
| | 110 | Controlled in response to current, voltage, or temperature |
| | 111 | Repeat or interrupted current systems (e.g., multiple welds, multiple heated weld) |
| | 112 | Stored energy discharge (e.g., inductive) |
| | 114 | With space-discharge tube control (e.g., thyratron, ignitron) |
| | 115 | Synchronous switching on and off |
| | 116 | With transformer |
| | 117.1 | Methods |
| | 119 | Electrodes (e.g., structure) |
| | 121.11 | By arc |
| | 121.12 | Using electron beam |
| | 121.13 | Welding |
| | 121.15 | Deposition (e.g., sputtering) |
| | 121.16 | Melting |
| | 121.18 | Cutting |
| | 121.21 | Chamber |
| | 121.24 | Nonvacuum environment |
| | 121.25 | Shaping |
| | 121.28 | Position control |
| | 121.31 | Workpiece position control |
| | 121.33 | With fluid supply (e.g., shielding gas or coolant) |
| | 121.34 | Power supply |
| | 121.35 | Methods |
| | 121.36 | Using plasma |
| | 121.37 | Melting |
| | 121.39 | Cutting |
| | 121.45 | Welding |
| | 121.47 | Spray coating |
| | 121.48 | Plasma torch structure |
| | 121.49 | Cooling system |
| | 121.5 | Nozzle system |
| | 121.51 | Gas supply system |
| | 121.52 | Electrode structure |
| | 121.53 | Consumable electrode |
| | 121.54 | Control systems |
| | 121.58 | With work holder |
| | 121.59 | Methods |
| | 121.6 | Using laser |
| | 121.61 | Beam energy control |
| | 121.63 | Welding |
| | 121.65 | Melting |
| | 121.67 | Cutting |
| | 121.73 | Shaping |
| | 121.76 | Multiple beams |
| | 121.78 | Beam position control |
| | 121.82 | Workpiece position control |
| | 121.83 | With monitoring |
| | 121.84 | With fluid supply |
| | 121.85 | Method |
| | 121.86 | Chamber |
| | 122 | Control of arc direction |
| | 124.01 | With ignition by retraction |
| | 124.02 | With gap control |
| | 124.1 | With automatic positioning of arc |
| | 124.21 | Including work cutting |
| | 124.22 | In response to work shape |
| | 124.31 | Having carriage supported by work |
| | 124.32 | Having variable welding head travel rate (e.g., gravity feed) |
| | 124.33 | Having electrode angle control |
| | 124.34 | By using probe means |
| | 124.4 | In response to work position |
| | 124.5 | In response to the transfer rate of the weld metal |
| | 125.1 | With predetermined welding operation |
| | 125.11 | For closed path welding (e.g., circumferential welding) |
| | 125.12 | For oscillating electrode welding |
| | 126 | Vertical work (e.g., horizontal seam in vertical wall) |
| | 127 | Spot arc bonding (e.g., arc riveting) |
| | 128 | With working of bonding metal (e.g., by peening) |
| | 129 | Brazzing or soldering |
| | 130.01 | Including circuits for monitoring arc parameters |
| | 130.1 | Including arc-power supplies |
| | 130.21 | With automatic output control (e.g., shortcircuit, infrared) |
| | 130.31 | Responsive to arc voltage only |
| | 130.32 | Responsive to arc current only |
| | 130.33 | Responsive to both arc voltage and arc current |
| | 130.4 | With arc ignition and stabilization arrangements |
| | 130.5 | With predetermined time variation of arc voltage or current (e.g., programmed) |
| | 132 | Remote control |
| | 133 | With generator (e.g., gas engine driven) |
| | 136 | Welding |
| | 137.2 | With consumable electrode device |
| | 137.31 | Gun |
| | 137.41 | Having fume extractor |
| | 137.42 | Having gas flow limiting shape (e.g., gas diffuser) |
| | 137.43 | Having spatter shield |
| | 137.44 | Having integral electrode guide |
| | 137.61 | Having filler electrical contact structure |
| | 137.62 | Having cooling means |
| | 137.63 | Having supply connection means (e.g., quick disconnect) |
| | 137.7 | Rate control |
| | 137.8 | Including filler wire deforming |
| | 137.9 | Supply cables (e.g., for current, shielding gas, coolant) |
| | 138 | Electrode holder (e.g., spring biased tong) |
| | 145.1 | Weld rod structure |
| | 146.1 | Weld rod composition |
| | 146.21 | Nonconsumable |
| | 146.22 | Nonferrous |
| | 146.23 | Containing nickel, chromium, and iron |
| | 146.24 | Metal deoxidizer or denitrogenizer |
| | 146.31 | Particulate |
| | 147 | With eye shield |
| | 148 | Bonding |
| | 149 | With forging or shaping (e.g., of powder) |
| | 155 | Endless strip |
| | 156 | Rods and bars |
| | 157 | Rivets |
| | 158 | Work holders |
| | 162 | Methods |
| | 200 | HEATING DEVICES |
| | 201 | Combined with diverse-type art device |
| | 202 | Vehicle or vehicle component |
| | 209 | Electrical devices |
| | 211 | Apparel |
| | 212 | Bed covering (e.g., blanket) |
| | 213 | Static structure (e.g., building pavement, etc.) |
| | 214 | Vending, dispensing, or display device |
| | 215 | Shoe machinery |
| | 216 | Printing or reproduction device |
| | 217 | Chair, bed, or other body-supporting means |
| | 218 | Table or cabinet |
| | 219 | Mirror |
| | 220 | Light means |
| | 221 | Tool or instrument |
| | 222 | Hair heaters |
| | 223 | Singeing apparatus |
| | 224 | Electrolytic |
| | 225 | With heated clamp means (e.g., hand-held) |
| | 226 | With heated casing |
| | 227 | Hand-manipulative |
| | 228 | With heat distribution means (i.e., heat applied to extended area) |
| | 229 | With heated tip or other heat concentration means (i.e., heat applied to localized area) |
| | 230 | With tip cooling, clamping, or lighting means |
| | 231 | Convertible |
| | 232 | Internal arc-type heating unit |
| | 233 | Tip in electrical circuit |
| | 236 | Coil or loop-type heating element |
| | 240 | With power supply, voltage or current control, or connection and/or disconnection means |
| | 242 | Supports |
| | 243 | Combined with pressure application means |
| | 244 | Rotatable |
| | 245 | Sole plate-type pressure application means (e.g., flatiron) |
| | 246 | Combined with stand |
| | 248 | With condition-responsive indicator |
| | 249 | Convertible |
| | 250 | With power supply, voltage or current-control means |
| | 254 | With heating unit structure |
| | 256 | With electrical circuit completion or terminal structure |
| | 258 | With heat storage, exchange, or reflector means |
| | 259 | Supporting devices |
| | 260 | Resistive element: igniter type |
| | 261 | With blower, suction, or other ignition facilitating means |
| | 262 | With current control or external circuit connection or disconnection means |
| | 267 | With housing casing or support means for igniter unit |
| | 268 | With source of power or current |
| | 269 | With indicating means |
| | 270 | With igniter unit structure |
| Class 392 is an integral part of this Class (Class 219), as shown by the position of this box, and follows the schedule hierarchy of this Class, retaining all pertinent definitions and Class lines of this class. | ||
| | 383 | Electric arc-type devices |
| | 385 | Combined with container, enclosure, or support for material to be heated |
| | 386 | Portable or mobile |
| | 388 | With means whereby material to be heated may be passed continuously through heated area (e.g., conveyor) |
| | 389 | Revolving enclosure |
| | 390 | Muffle-type enclosure |
| | 391 | Oven type |
| | 392 | Combined with additional material support |
| | 393 | Oven performs plural diverse functions |
| | 394 | With plural ovens |
| | 395 | With plurality of separate heating units |
| | 396 | Of diverse construction or functioning in diverse manners |
| | 397 | Of different resistive values |
| | 398 | Selectively energized |
| | 399 | With heat energy transfer, distribution, or accumulator means |
| | 401 | With steam generating means |
| | 402 | With casing or support for heating unit or units |
| | 403 | Retractable or detachable (from heated enclosure) |
| | 404 | Hinged or adjustable (within the heated enclosure) |
| | 405 | Including heat energy reflecting or directing means |
| | 406 | With resistance heating means surrounding heating area |
| | 408 | With resistance heating unit or units fixed enclosed by or located within heating area |
| | 409 | With heating unit structure or composition |
| | 412 | With current or voltage control or regulating means |
| | 414 | With switch or other external circuit completing means |
| | 415 | Deep well |
| | 416 | Convertible |
| | 417 | With plurality of separate heating units |
| | 418 | With adjustable position heating unit or units |
| | 419 | With current control or external circuit opening or closing means |
| | 420 | Crucible or furnace type (i.e., adapted to hold meltable material) |
| | 421 | Melting pot |
| | 422 | With plural separate heating units |
| | 423 | With protection means for heating unit or switch |
| | 424 | With resistance heating element surrounding or embedded within walls of container |
| | 425 | With current or voltage control means |
| | 426 | With significant heating unit structure or composition |
| | 428 | Plural containers |
| | 429 | With vessel and stand |
| | 430 | With heat storage or transfer means |
| | 431 | With pressure generating or maintaining means |
| | 432 | Vessel separable from stand |
| | 433 | With heating unit unitary with or attached to the stand |
| | 435 | With external electrical circuit connection or disconnection means |
| | 436 | With heating unit attaching or support means |
| | 438 | With vessel |
| | 439 | With heat storage or transfer means |
| | 440 | With pressure generating or maintaining means (e.g., pressure cooker) |
| | 441 | With temperature or current control means |
| | 443.1 | Exposed horizontal planar support surface for material to be heated (e.g., hot plate, etc.) |
| | 444.1 | Material is an electronic semiconductor device |
| | 445.1 | With indicator |
| | 446.1 | Having sensor |
| | 447.1 | Responsive to presence of material (e.g., food, a cooking vessel, etc.) |
| | 448.11 | Responsive to temperature |
| | 448.12 |  Having microprocessor to control output of the heating device |
| | 448.13 | Of material (e.g., food, a cooking vessel, etc.) |
| | 448.14 |  Using thermistor-type sensor |
| | 448.15 | Using temperature expansible fluid-type sensor |
| | 448.16 | Using bimetallic member-type sensor |
| | 448.17 | Of the exposed horizontal planar support surface |
| | 448.19 | By rod or wire in a tube (e.g., thermo-cutoff probe, etc.) |
| | 449.1 | Heating by convection |
| | 450.1 | For direct contact with food (e.g., grill, griddle, etc.) |
| | 451.1 | Having support for a heating unit |
| | 452.11 | Frame, casing, or housing (e.g., range top, stove top, countertop, etc.) |
| | 452.12 | Supporting an imperforate exposed horizontal planar surface to overlie the heating unit (e.g., cooktop, etc.) |
| | 452.13 | Convertible (e.g., to an oven, to storage, etc.) |
| | 453.11 | Allowing heating unit movement |
| | 453.12 | Enabling the exposed horizontal planar surface to conform to material having other than a planar surface |
| | 453.13 | Using hinge for tilting or pivoting |
| | 454.11 | Bracket having a hub and three or more angularly spaced horizontal projections (e.g., a spider, etc.) |
| | 455.11 | Pan or cup (e.g., a drip pan, etc.) |
| | 456.1 | Ring having a flange overlaying hole in a surrounding support surface |
| | 457.1 | Having direct manually actuated electrical switch |
| | 458.1 | Having electrical connection |
| | 460.1 | Heating element gapped from underside of the exposed horizontal support surface (e.g., ceramic plate, radiation-type, etc.) |
| | 463.1 | Formed by tubularly shaped heating unit |
| | 465.1 | Heating element contacting planar underside of the exposed horizontal planar support surface (e.g., sheet metal, etc.) |
| | 468.1 | Heating element is embedded in the exposed horizontal planar support surface |
| | 468.2 | Heating element is in a groove formed on underside of the exposed horizontal planar support surface (e.g., cast metal plate, etc.) |
| | 469 | Cylindrical or roller-type support for material to be heated |
| | 472 | Plural functions simultaneously or convertible |
| | 475 | With plural heat utilization means (single heater) |
| | 476 | Plural separate heating devices |
| | 477 | With common power supply or current control means |
| | 478 | With unitary housing, support, or casing means |
| | 479 | Diverse type (each electric) |
| | 480 | Selectively activated |
| | 481 | With protective means for heater |
| | 482 | With power supply and voltage or current regulation or current control means |
| | 483 | Controlling or regulating plural separate distinct heating resistance elements(i.e., one control system for all elements) |
| | 484 | Of diverse resistance characteristics or value |
| | 485 | With total current or power limiting means |
| | 486 | Selectively, sequentially or alternately |
| | 488 | With voltage limitation, conversion, or adapting means |
| | 489 | Combined manual and automatic regulating or control means |
| | 490 | Automatic regulating or control means |
| | 491 | Combined (e.g., electromechanical and thermal) |
| | 492 | Comprising timing or cycling means |
| | 494 | Thermally responsive |
| | 496 | Pressure responsive |
| | 497 | Comprising voltage and/or current measuring and comparing or combining means |
| | 500 | Including electron or glow-discharge tube means |
| | 501 | Including semiconductor means (e.g., transistor) |
| | 502 | Utilizing light-sensitive and/or responsive means |
| | 503 | Inductive reactor means (e.g., auto transformer) |
| | 504 | Comprising variable resistance means |
| | 506 | With signal or indicating means |
| | 507 | With current connection and/or disconnection means (e.g., switch) |
| | 508 | Plural means intermittently or selectively operated |
| | 509 | Automatically operated |
| | 510 | Thermally responsive |
| | 511 | With auxiliary heating means for thermal switch means |
| | 512 | Comprising linearly expansible metal |
| | 513 | Comprising expansible fluid (e.g., alcohol or mercury) |
| | 514 | With solenoid means |
| | 515 | Adjustable means |
| | 516 | Insertable into or in direct contact with heated material |
| | 517 | Fusible link |
| | 518 | Responsive to weight, position, or presence of body to be heated |
| | 519 | Including electromagnetic relay means |
| | 520 | With heater-unit housing, casing, or support means (e.g., frame and single sheet) |
| | 521 | Including or comprising holding or support means for material to be heated |
| | 522 | Housing, casing, or support performs plural diverse functions (e.g., window) |
| | 523 | Housing, casing, or support insertable into material or space to be heated (e.g., immersion type) |
| | 524 | Comprising hinged or separable compartment (e.g., waffle iron type) |
| | 526 | With means for attaching housing or casing to an external device (e.g., magnetic or vacuum) |
| | 528 | Flexible or resilient (e.g., warming pad) |
| | 530 | With heat storage or transfer means (vanes) |
| | 531 | With thermal insulation or cooling means |
| | 532 | With open frame or grid-type support |
| | 533 | Portable (e.g., with handle) |
| | 534 | Rigid tubular housing, casing, or support (e.g., flattened tube) |
| | 535 | Specially formed or adapted to fit material to be heated (e.g., a pipe) |
| | 536 | With heating unit mounting or attaching means |
| | 538 | With heating unit structure |
| | 539 | Comprising plural separate and distinct resistive elements |
| | 540 | With heat storage or transfer means (e.g., fins or plate) |
| | 541 | With terminal or connector means (e.g., to external circuit means) |
| | 542 | With resistive-element attaching, securing or electrical insulation means |
| | 543 | Comprising coating printed or deposited on core sheath or support means |
| | 544 | Element embedded within or completely surrounded by core, sheath, or support means |
| | 545 | Resistive element interwoven with fabric support |
| | 546 | Core, sheath, or support means for heating element |
| | 552 | Heating element structure |
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