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Class Number: 219 Class Title: ELECTRIC HEATING Subclass Subclass Number Title 6.5 INDUCTION HEATING, ELECTRO-STATIC OR ELECTRO-MAGNETIC 7.5 .Metal working (e.g., levigation, machining, stretching) 8.5 ..Tubes and pipes 9.5 ..Bonding to metal (e.g., welding) 10.41 .Methods 10.43 ..Selective area 10.47 .With diverse-type electrical heater 10.491 .With heat exchange 10.492 ..Roller (e.g., godet) 10.493 ..Cooking means 10.51 ..Fluent material conduit 10.53 .Bonding (e.g., seam welding) 10.55 R .Electromagnetic wave irradiation (e.g., resonant cavity type) 10.55 A ..Pass thru waveguides 10.55 B ..Power supply circuitry 10.55 C ..Interlock circuitry and structure 10.55 D ..Radiation protection 10.55 E ..Cookware 10.55 F ..Field modification and energy distribution 10.55 M ..Methods 10.57 .Special application (e.g., heated specific device or material) 10.59 ..Gears 10.61 R ..Webs, strands or sheets 10.61 A ...Godets 10.63 ..Shoes 10.65 .Fluent material 10.67 .With article or material support 10.69 ..Conveyer 10.71 ...Plural heating zones 10.73 ..Article or material manipulator (e.g., pressure applicator) 10.75 .Inductive heating systems 10.77 ..With automatic control 10.79 .Inductors 10.81 .Electrodes 50 METAL HEATING (E.G., RESISTANCE HEATING) 51 .Chain 52 ..Methods 53 .Rail bond 54 ..Arc weld 55 ..Resistance weld methods 56 .Wire, rod or bar bonding 56.1 ..Of wire leads 56.21 ...By microbonding 56.22 ...Methods 57 ..Butt bonding (e.g., welding) 58 ..Methods 59.1 .Of cylinders (e.g., pipes and tubes) 60 R ..Electric arc 60.2 ...Tube sheet weldingg 61 ...Methods 60 A ...Rotatable tube welders 61.1 ..Having internal support means 61.11 ...With forming means 61.12 ...With cleaning means 61.13 ...With edge guidance 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) 69.1 ..Electric arc 69.11 ..Electric spark machining 69.12 ...Wire cutting 69.13 ...Circuits 69.14 ...Dielectric composition and purification 69.15 ...Electrodes 69.16 ...Gap spacing control 69.17 ...Methods 69.18 ...Pulse 69.19 ...Safety circuits 69.2 ...Vibrating electrodes or workpiece 70 ...Hand-type tools 71 .Liquid electrode 72 .Nonatmospheric environment at hot spot (e.g., resistance weld under oil, vacuum) 73 ..Slag (e.g. submerged arc) 73.1 ...Including electroslag welding 73.11 ....For coating 73.2 ...With granular flux supply 73.21 ....For deposition welding 74 ..Gas supply (e.g., by ingredient of electrode, by external source) 75 ...Nonconsumable electrode (e.g., atomic hydrogen) 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 76.15 ...With nonconsumable electrode 76.16 ...Plasma 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 85.11 ...Utilizing induction heating 85.12 ...Utilizing radiant energy 85.13 ....Methods 85.14 ...With filler metal in circuit 85.15 ....Methodss 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 78.12 ...Methods 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 80 ...Spot bond 81 ..Roller electrode 82 ...Roller moves over work 83 ...Methods 84 ...Electrode structure 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 86.41 .....With condition responsive control means 86.51 ......Responsive to pressure 86.61 .......By force balancing 86.7 .....For predetermined welding operation 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 91.21 ....Of welding through insulation 91.22 ....With additional heating to same spot 91.23 ....With work deforming 92 ....Current limitation (e.g., by interposed insulation) 93 .....By localized projection 94 .....By interposed button 95 ..Percussive 96 ...Methods 97 ..Flash 98 ...Stud 99 ....Methods 100 ...Methods 101 ..Butt 102 ...Extended seamm 103 ...One part fed 104 ...Methods 105 ....Preparation of edges 106 ....By use of a bridging member (e.g., splice plate) 107 ....End or edge to surface 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) 113 ....Condenser discharge 114 ...With space-discharge tube control (e.g., thyratron, ignitron) 115 ...Synchronous switching on and off 116 ...With transformer 117.1 ..Methods 118 ...Particular material (e.g., dissimilar, aluminum) 119 ..Electrodes (e.g., structure) 120 ...With cooling 121.11 .By Arc 121.12 ..Using electron beam 121.13 ...Welding 121.14 ....Methods 121.15 ...Deposition (e.g., Sputtering) 121.16 ...Melting 121.17 ....Methods 121.18 ...Cutting 121.19 ....Etching or Trimming 121.2 .....Methods 121.21 ...Chamber 121.22 ....Sealing 121.23 ....Monitoring 121.24 ...Nonvacuum environment 121.25 ...Shaping 121.26 ....With focusing 121.27 ....With electrode or gun structure 121.28 ...Position control 121.29 ....Swept or scanned 121.3 ....Condition responsive 121.31 ...Workpiece position control 121.32 ....Condition responsive 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 121.38 ....Methods 121.39 ...Cutting 121.4 ....Etching 121.41 .....Methods 121.42 .....Rate control 121.43 .....With chamber 121.44 ....Methods 121.45 ...Welding 121.46 ....Methods 121.47 ...Spray coating 121.48 ...Plasma torch structuree 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 121.55 ....Gas supply 121.56 ....Arc positioning 121.57 ....Arc ignition 121.58 ...With work holder 121.59 ...Methods 121.6 ..Using laser 121.61 ...Beam energy control 121.62 ....Condition responsive 121.63 ...Welding 121.64 ....Methods 121.65 ...Melting 121.66 ....Methods 121.67 ...Cutting 121.68 ....Etching or trimming 121.69 .....Methods 121.7 ....Hole punching 121.71 .....Methods 121.72 ....Methods 121.73 ...Shaping 121.74 ....With mirror 121.75 ....With lens 121.76 ...Multiple beams 121.77 ....With sing source 121.78 ...Beam position control 121.79 ....Path adjustment 121.8 ....Swept or scanned 121.81 ....Condition responsive 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 123 ...Magnetic 124.01 ..With ignition by retraction 124.02 ..With gap control 124.03 ...By arc voltage 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) 130.51 ....Pulsating or periodic output 132 ...Remote control 133 ...With generator (e.g., gas engine driven) 134 ....Electric motor driven 136 ..Welding 137 R ...Process 137 PS ....Power supply 137 WM ....Weld metal composition 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 137.51 .....With flexibility 137.52 .....With wear resistant liner 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 137.71 ....Circuits 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) 139 ...Plural adjustable electrodes (e.g., hand torch) 140 ...Spring jaw (e.g., sprung by electrode) 141 ....With separate actuator 142 ...Plunger jaw (e.g., screw actuated) 143 ....Spring biased 144 ...Positive grip 145.1 .Weld rod structure 145.21 ..Nonconsumable 145.22 ..Flux cored 145.23 ..Flux coated 145.31 ...Partially 145.32 ...With wire wrap 145.41 ..Nonmetal cover 146.1 .Weld rod composition 146.21 ..Nonconsumable 146.22 ..Nonferrous 146.23 ..Containing nickel, chromium, and iron 146.24 ..Metal deoxidizer or denitrogenizer 146.3 ...Particulate 146.31 ..Particulatee 146.32 ...Alloying 146.41 ....Nickel or chromium 146.51 ...Containing carbide 146.52 ...Shielding 147 ..With eye shield 148 .Bonding 149 .With forging or shaping (e.g., of powder) 150 R ..Upsetting 151 ...Anvil electrode 152 ...Simultaneous with heating 150 V ...Riveting 153 ..Bending or twisting 154 ..Subsequent to heating 155 .Endless strip 156 .Rods and bars 157 .Rivets 158 .Work holders 159 ..Rotating supports 160 ..Mandrels (e.g., anvil) 161 ..Clamp 162 .Methods 200 HEATING DEVICES 201 .Combined with diverse-type art device 202 ..Vehicle or vehicle component 203 ...Windshield or window 204 ...Steering device 205 ...Motor or engine 206 ....Manifold 207 ....Carburetor 208 ....Radiator or cooling system 209 ..Electrical devices 210 ...Crystal or other vibratory device 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 234 .....Work in circuitt 235 .....With transformer secondary 236 ....Coil or loop-type heating element 237 .....Integral with tip 238 .....Detachable tip 239 ......Threaded 240 ...With power supply, voltage or current control, or connection and/or disconnection means 241 ....With thermal control 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 247 ....With complementary electrical connector means to external circuit terminating in stand 248 ...With condition-responsive indicator 249 ...Convertible 250 ...With power supply, voltage or current-control means 251 ....Thermally responsive 252 .....Adjustable 253 .....Comprising fusible metal, expansible liquid or bar means 254 ...With heating unit structure 255 ....Plural heating units 256 ...With electrical circuit completion or terminal structure 257 ....Automatically operated 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 263 ...Automatic 264 ....Thermally responsive 265 .....Bimetallic or other flexible means 266 ...Resilient 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 383 .Electric arc type devices 384 ..With perforating or disintegrating means 385 .Combined with container, enclosure or support for material to be heated 386 ..Portable or mobile 387 ...Food conveying type (e.g., lunch box) 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 meanss 400 ....By convection 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 407 ....Embedded within or between walls of container 408 ...With resistance heating unit or units fixed enclosed by or located within heating area 409 ...With heating unit structure or composition 410 ....With plural section heating element 411 ....With infrared generating means 412 ...With current or voltage control or regulating means 413 ....Automatically responsive to condition of heating area 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 427 ....Container comprises resistance heating element 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 434 ....Adjustable relative to vessel or stand 435 ...With external electrical circuit connection or disconnection means 436 ...With heating unit attaching or support means 437 ....Immersible 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 442 ....Adjustable 443 ..Exposed horizontal planar heating surface (e.g., hot plate type) 444 ...With stowaway or concealing means 445 ...With plural individual heating units or elements 446 ....Selectively activated 447 ....Detachable or interchangeable 448 ...With electrical voltage or current regulation or control means 449 ....Thermally responsivee 450 .....In direct contact with material to be heated 451 ...With external circuit connection or disconnection means 452 ....Automatically operated 453 ....With circuit condition indicating means 454 ...Convertible (e.g., acts as heating unit for oven) 455 ...Self-supported heating unit adapted to furnish material support 456 ....Adjustable to shape of material to be heated 457 ...Heating unit embedded within or unitary with material support 458 ...With housing, casing or support means for heating unit 459 ....Combined with material support surface 460 ....With thermal insulation or ventilating means 461 ....With heat energy reflecting or deflecting means 462 ....With heat energy storage, transfer or exchange means 463 ....With heating unit attachment or securing means 464 ...Planar heating surface or particular material or structure 465 ...With heating unit structure 466 ....Comprising plural resistive elements 467 ....With element-attaching or supporting means 468 ....With resistance element structure or material 469 ..Cylindrical or roller-type support for material to be heated 470 ...With plural heating units 471 ...With external electrical circuit completion means 472 .Plural functions simultaneously or convertible 473 ..To nonheating device 474 ..To diverse-type electric heating device 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 487 ....With indicator means 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., electro-mechanical and thermal) 492 ...Comprising timing or cycling means 493 ....Electro-mechanical 494 ...Thermally responsive 495 ....Thermomagnetic 496 ...Pressure responsive 497 ...Comprising voltage and/or current measuring and comparing or combining means 498 ....Including follow-up servo means 499 ....Including bridge 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 505 ....Comprising nonlinear or negative temperature coefficient 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) 525 ...With plurality of or sectional heating means 526 ..With means for attaching housing or casing to an external device (e.g., magnetic or vacuum) 527 ...Body-supported (e.g., human body) 528 ..Flexible or resilient (e.g., warming pad) 529 ...Cloth or other fabric 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 537 ...Plural units combined with single casing housing or support 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 meanss 545 ...Resistive element interwoven with fabric support 546 ..Core, sheath or support means for heating element 547 ...Comprising material to be heated 548 ...Of particular construction or material 549 ....Flexible 550 ....Sectional or interconnectable insulator means 551 ....Gasket or wafer-type insulator means 552 ..Heating element structure 553 ...Of particular construction and/or material (e.g., infrared generator)