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Class Information
Number: 219
Name: Electric heating >
Description: This class includes all those devices commonly known as electric heaters, electric-heating metal working apparatus, electrically-heated tools and instruments. Processes are classified with the apparatus unless otherwise indicated by the subclass title.










Class Number Class Name No. of Patents
219/764

Capacitive dielectric heating

13
219/765

Bonding

76
219/769

Container sealing

45
219/767

Die embroidery

13
219/768

Sewing machine type

3
219/766

Shoe

3
219/780

Specific electrode configuration

117
219/770

Specific heating application

72
219/772

Fluent material

48
219/771

Food

61
219/773

Sheet (e.g., board, etc.)

36
219/778

With power supply system

46
219/779

Condition responsive

52
219/774

With workpiece support

16
219/775

Conveyor

37
219/776

Multiple stations

17
219/777

Pressure applicator (e.g., clamp, etc.)

45
219/200

Heating devices

124
219/385

Combined with container, enclosure, or support for material to be heated

522
219/420

Crucible or furnace type (i.e., adapted to hold meltable material)

41
219/421

Melting pot

178
219/425

With current or voltage control means

23
219/422

With plural separate heating units

42
219/423

With protection means for heating unit or switch

2
219/424

With resistance heating element surrounding or embedded within walls of container

97
219/426

With significant heating unit structure or composition

52
219/427

Container comprises resistance heating element

16
219/469

Cylindrical or roller-type support for material to be heated

353
219/471

With external electrical circuit completion means

74
219/470

With plural heating units

101
219/415

Deep well

27
219/416

Convertible

3
219/418

With adjustable position heating unit or units

6
219/419

With current control or external circuit opening or closing means

16
219/417

With plurality of separate heating units

12
219/443.1

Exposed horizontal planar support surface for material to be heated (e.g., hot plate, etc.)

156
219/450.1

For direct contact with food (e.g., grill, griddle, etc.)

85
219/463.1

Formed by tubularly shaped heating unit

41
219/464.1

Having plural tubular heating units

19
219/457.1

Having direct manually actuated electrical switch

59
219/458.1

Having electrical connection

59
219/459.1

Receptacle (e.g., socket, an insulator block, a terminal block, etc.)

36
219/446.1

Having sensor

91
219/447.1

Responsive to presence of material (e.g., food, a cooking vessel, etc.)

67
219/448.11

Responsive to temperature

156
219/448.19

By rod or wire in a tube (e.g., thermo-cutoff probe, etc.)

50
219/448.12

Having microprocessor to control output of the heating device

74
219/448.13

Of material (e.g., food, a cooking vessel, etc.)

26
219/448.16

Using bimetallic member-type sensor

3
219/448.15

Using temperature expansible fluid-type sensor

6
219/448.14

Using thermistor-type sensor

15
219/448.17

Of the exposed horizontal planar support surface

64
219/448.18

Using bimetallic member-type sensor

8
219/451.1

Having support for a heating unit

62
219/453.11

Allowing heating unit movement

14
219/453.12

Enabling the exposed horizontal planar surface to conform to material having other than a planar surface

4
219/453.13

Using hinge for tilting or pivoting

3
219/453.14

Of pintle and gudgeon type

8
219/453.15

Having an axis at an acute or obtuse angle to the exposed horizontal planar surface

1
219/454.11

Bracket having a hub and three or more angularly spaced horizontal projections (e.g., a spider, etc.)

8
219/454.12

Having means to secure to the heating unit or a surrounding support

10
219/452.11

Frame, casing, or housing (e.g., range top, stove top, countertop, etc.)

96
219/452.13

Convertible (e.g., to an oven, to storage, etc.)

20
219/452.12

Supporting an imperforate exposed horizontal planar surface to overlie the heating unit (e.g., cooktop, etc.)

77
219/455.11

Pan or cup (e.g., a drip pan, etc.)

23
219/455.12

Reflector-type

22
219/456.1

Ring having a flange overlaying hole in a surrounding support surface

17
219/449.1

Heating by convection

25
219/465.1

Heating element contacting planar underside of the exposed horizontal planar support surface (e.g., sheet metal, etc.)

93
219/466.1

Foil or film-type of heating element

73
219/467.1

Support for the heating element

49
219/460.1

Heating element gapped from underside of the exposed horizontal support surface (e.g., ceramic plate, radiation-type, etc.)

137
219/462.1

Plural heating elements

116
219/461.1

Support for the heating element

84
219/468.1

Heating element is embedded in the exposed horizontal planar support surface

60
219/468.2

Heating element is in a groove formed on underside of the exposed horizontal planar support surface (e.g., cast metal plate, etc.)

59
219/444.1

Material is an electronic semiconductor device

382
219/445.1

With indicator

132
219/390

Muffle-type enclosure

807
219/391

Oven type

195
219/392

Combined with additional material support

164
219/393

Oven performs plural diverse functions

90
219/402

With casing or support for heating unit or units

82
219/404

Hinged or adjustable (within the heated enclosure)

67
219/405

Including heat energy reflecting or directing means

617
219/403

Retractable or detachable (from heated enclosure)

79
219/412

With current or voltage control or regulating means

124
219/413

Automatically responsive to condition of heating area

303
219/399

With heat energy transfer, distribution, or accumulator means

104
219/400

By convection

913
219/409

With heating unit structure or composition

49
219/411

With infrared generating means

756
219/410

With plural section heating element

24
219/394

With plural ovens

85
219/395

With plurality of separate heating units

107
219/397

Of different resistive values

23
219/396

Of diverse construction or functioning in diverse manners

63
219/398

Selectively energized

90
219/406

With resistance heating means surrounding heating area

56
219/407

Embedded within or between walls of container

86
219/408

With resistance heating unit or units fixed enclosed by or located within heating area

65
219/401

With steam generating means

370
219/414

With switch or other external circuit completing means

75
219/428

Plural containers

87
219/386

Portable or mobile

568
219/387

Food conveying type (e.g., lunch box)

137
219/389

Revolving enclosure

74
219/388

With means whereby material to be heated may be passed continuously through heated area (e.g., conveyor)

793
219/429

With vessel and stand

85
219/432

Vessel separable from stand

251
219/435

With external electrical circuit connection or disconnection means

84
219/430

With heat storage or transfer means

132
219/436

With heating unit attaching or support means

99
219/437

Immersible

101
219/433

With heating unit unitary with or attached to the stand

249
219/434

Adjustable relative to vessel or stand

21
219/431

With pressure generating or maintaining means

29
219/438

With vessel

208
219/439

With heat storage or transfer means

146
219/440

With pressure generating or maintaining means (e.g., pressure cooker)

56
219/441

With temperature or current control means

243
219/442

Adjustable

82
219/201

Combined with diverse-type art device

386
219/211

Apparel

260
219/212

Bed covering (e.g., blanket)

263
219/217

Chair, bed, or other body-supporting means

219
219/209

Electrical devices

356
219/210

Crystal or other vibratory device

82
219/220

Light means

88
219/219

Mirror

175
219/216

Printing or reproduction device

1813
219/215

Shoe machinery

20
219/213

Static structure (e.g., building pavement, etc.)

322
219/218

Table or cabinet

74
219/202

Vehicle or vehicle component

574
219/205

Motor or engine

212
219/207

Carburetor

57
219/206

Manifold

95
219/208

Radiator or cooling system

65
219/204

Steering device

70
219/203

Windshield or window

484
219/214

Vending, dispensing, or display device

143
219/243

Combined with pressure application means

284
219/244

Rotatable

52
219/245

Sole plate-type pressure application means (e.g., flatiron)

70
219/246

Combined with stand

12
219/247

With complementary electrical connector means to external circuit terminating in stand

31
219/249

Convertible

12
219/259

Supporting devices

23
219/248

With condition-responsive indicator

25
219/256

With electrical circuit completion or terminal structure

17
219/257

Automatically operated

21
219/258

With heat storage, exchange, or reflector means

13
219/254

With heating unit structure

30
219/255

Plural heating units

22
219/250

With power supply, voltage or current-control means

39
219/251

Thermally responsive

38
219/252

Adjustable

19
219/253

Comprising fusible metal, expansible liquid, or bar means

17
219/383

Electric arc-type devices

76
219/384

With perforating or disintegrating means

59
219/472

Plural functions simultaneously or convertible

22
219/474

To diverse-type electric heating device

16
219/473

To nonheating device

11
219/476

Plural separate heating devices

43
219/479

Diverse type (each electric)

8
219/480

Selectively activated

59
219/477

With common power supply or current control means

39
219/478

With unitary housing, support, or casing means

33
219/260

Resistive element: igniter type

93
219/261

With blower, suction, or other ignition facilitating means

11
219/262

With current control or external circuit connection or disconnection means

20
219/263

Automatic

27
219/264

Thermally responsive

35
219/265

Bimetallic or other flexible means

45
219/266

Resilient means

4
219/267

With housing casing or support means for igniter unit

139
219/270

With igniter unit structure

403
219/269

With indicating means

25
219/268

With source of power or current

31
219/221

Tool or instrument

101
219/222

Hair heaters

206
219/224

Electrolytic

2
219/223

Singeing apparatus

35
219/226

With heated casing

14
219/225

With heated clamp means (e.g., hand-held)

175
219/227

Hand-manipulative

165
219/242

Supports

129
219/228

With heat distribution means (i.e., heat applied to extended area)

88
219/229

With heated tip or other heat concentration means (i.e., heat applied to localized area)

186
219/236

Coil or loop-type heating element

50
219/238

Detachable tip

59
219/239

Threaded

13
219/237

Integral with tip

23
219/231

Convertible

18
219/232

Internal arc-type heating unit

4
219/233

Tip in electrical circuit

109
219/235

With transformer secondary

18
219/234

Work in circuit

39
219/230

With tip cooling, clamping, or lighting means

227
219/240

With power supply, voltage or current control, or connection and/or disconnection means

120
219/241

With thermal control means

118
219/507

With current connection and/or disconnection means (e.g., switch)

121
219/509

Automatically operated

113
219/519

Including electromagnetic relay means

84
219/518

Responsive to weight, position, or presence of body to be heated

237
219/510

Thermally responsive

145
219/515

Adjustable means

12
219/513

Comprising expansible fluid (e.g., alcohol or mercury)

34
219/512

Comprising linearly expansible metal

88
219/517

Fusible link

86
219/516

Insertable into or in direct contact with heated material

29
219/511

With auxiliary heating means for thermal switch means

95
219/514

With solenoid means

16
219/508

Plural means intermittently or selectively operated

335
219/520

With heater-unit housing, casing, or support means (e.g., frame and single sheet)

113
219/524

Comprising hinged or separable compartment (e.g., waffle iron type)

120
219/525

With plurality of or sectional heating means

55
219/528

Flexible or resilient (e.g., warming pad)

601
219/529

Cloth or other fabric

243
219/523

Housing, casing, or support insertable into material or space to be heated (e.g., immersion type)

344
219/522

Housing, casing, or support performs plural diverse functions (e.g., window)

318
219/521

Including or comprising holding or support means for material to be heated

626
219/533

Portable (e.g., with handle)

138
219/534

Rigid tubular housing, casing, or support (e.g., flattened tube)

99
219/535

Specially formed or adapted to fit material to be heated (e.g., a pipe)

581
219/530

With heat storage or transfer means (vanes)

324
219/536

With heating unit mounting or attaching means

332
219/537

Plural units combined with single casing housing or support

122
219/526

With means for attaching housing or casing to an external device (e.g., magnetic or vacuum)

42
219/527

Body-supported (e.g., human body)

93
219/532

With open frame or grid-type support

151
219/531

With thermal insulation or cooling means

59
219/538

With heating unit structure

141
219/539

Comprising plural separate and distinct resistive elements

119
219/546

Core, sheath, or support means for heating element

182
219/547

Comprising material to be heated

126
219/548

Of particular construction or material

468
219/549

Flexible

604
219/551

Gasket or wafer-type insulator means

16
219/550

Sectional or interconnectable insulator means

50
219/552

Heating element structure

381
219/553

Of particular construction and/or material (e.g., infrared generator)

704
219/540

With heat storage or transfer means (e.g., fins or plate)

243
219/542

With resistive-element attaching, securing or electrical insulation means

255
219/543

Comprising coating printed or deposited on core sheath or support means

704
219/544

Element embedded within or completely surrounded by core, sheath, or support means

893
219/545

Resistive element interwoven with fabric support

149
219/541

With terminal or connector means (e.g., to external circuit means)

751
219/475

With plural heat utilization means (single heater)

10
219/482

With power supply and voltage or current regulation or current control means

148
219/490

Automatic regulating or control means

166
219/491

Combined (e.g., electromechanical and thermal)

110
219/492

Comprising timing or cycling means

794
219/493

Electromechanical

76
219/504

Comprising variable resistance means

167
219/505

Comprising nonlinear or negative temperature coefficient resistance means

783
219/497

Comprising voltage and/or current measuring and comparing or combining means

1275
219/499

Including bridge means

116
219/498

Including follow-up servo means

5
219/500

Including electron or glow-discharge tube means

0
219/501

Including semiconductor means (e.g., transistor)

582
219/503

Inductive reactor means (e.g., auto transformer)

14
219/496

Pressure responsive

56
219/494

Thermally responsive

1068
219/495

Thermomagnetic

21
219/502

Utilizing light-sensitive and/or responsive means

169
219/506

With signal or indicating means

624
219/489

Combined manual and automatic regulating or control means

59
219/483

Controlling or regulating plural separate distinct heating resistance elements(i.e., one control system for all elements)

397
219/484

Of diverse resistance characteristics or value

29
219/486

Selectively, sequentially or alternately

431
219/487

With indicator means

44
219/485

With total current or power limiting means

130
219/488

With voltage limitation, conversion, or adapting means

28
219/481

With protective means for heater

196
219/600

Inductive heating

44
219/602

Metal working

58
219/603

Bonding

109
219/615

Brazing (e.g., cladding, etc.)

76
219/604

Container sealing

45
219/606

Ring

15
219/616

Soldering

48
219/607

Tube (i.e., pipe)

37
219/609

Layering (e.g., coating, lining, etc.)

26
219/611

Plural (e.g., end to end, etc.)

39
219/612

Seam bonding

27
219/614

With guiding device

19
219/613

With impeder

10
219/608

With electrical control (e.g., speed, temperature, gaging thickness, etc.)

20
219/610

With preheating or postheating

13
219/617

Welding

97
219/605

Wire (e.g., cable, etc.)

31
219/635

Specific heating application

338
219/640

Gear

39
219/642

Ring or link

17
219/637

Rod

39
219/639

Irregular (e.g., camshaft, etc.)

71
219/638

Semiconductor

40
219/646

Slab (e.g., ingot, etc.)

36
219/645

Strip (e.g., sheet, etc.)

139
219/643

Tube (i.e., pipe)

66
219/644

Interior surface

37
219/641

Valve

18
219/636

Wire (e.g., cable, etc.)

36
219/672

Specific inductor configuration

236
219/674

Cylindrical coil

130
219/675

Planar coil

81
219/673

U-coil section

81
219/677

With cooling arrangement

80
219/676

With inductor support

156
219/601

With diverse-type heating

85
219/618

With heat exchange

84
219/633

Bonding (e.g., nonmetallic, etc.)

274
219/620

Cooking

100
219/624

Core or coil structure

120
219/625

Intermediate member condition responsive

73
219/626

Load sensing

117
219/627

Temperature

87
219/621

Utensil (e.g., pot, pan, etc.)

111
219/622

With support

143
219/623

Having cooling device

36
219/628

Fluid or liquid heater

110
219/629

By tube (i.e., pipe)

54
219/630

Core or coil structure

67
219/631

Core rotation

37
219/619

Roller (e.g., godet, etc.)

352
219/634

Susceptor

264
219/632

With cooling arrangement

134
219/660

With power supply system

135
219/661

Power switching

99
219/663

Condition responsive

150
219/664

Input monitoring

42
219/665

Load sensing

166
219/667

Temperature

187
219/666

With tuning

37
219/662

Plural load inductors

117
219/669

Polyphase

14
219/668

With protection

44
219/671

With plural load inductors

86
219/670

With specific transformer

170
219/647

With workpiece support

85
219/653

Conveyor

65
219/654

Charge or discharge

36
219/657

Curve path

9
219/658

Lift (i.e., vertical movement)

23
219/655

Multiple stations

20
219/656

Plural heating zones

124
219/651

Gas environment

88
219/648

Levitation

25
219/649

Materials

65
219/659

Pressure applicator (e.g., clamp, etc.)

101
219/652

Rotation of workpiece

95
219/650

With monitoring (e.g., regulating, etc.)

52
219/50

Metal heating (e.g., resistance heating)

62
219/148

Bonding

22
219/121.11

By arc

84
219/129

Brazzing or soldering

29
219/122

Control of arc direction

16
219/123

Magnetic

113
219/138

Electrode holder (e.g., spring biased tong)

51
219/142

Plunger jaw (e.g., screw actuated)

5
219/143

Spring biased

3
219/139

Plural adjustable electrodes (e.g., hand torch)

3
219/144

Positive grip

19
219/140

Spring jaw (e.g., sprung by electrode)

4
219/141

With separate actuator

4
219/130.1

Including arc-power supplies

238
219/132

Remote control

106
219/130.4

With arc ignition and stabilization arrangements

145
219/130.21

With automatic output control (e.g., shortcircuit, infrared)

289
219/130.32

Responsive to arc current only

83
219/130.31

Responsive to arc voltage only

81
219/130.33

Responsive to both arc voltage and arc current

114
219/133

With generator (e.g., gas engine driven)

121
219/134

Electric motor driven

9
219/130.5

With predetermined time variation of arc voltage or current (e.g., programmed)

158
219/130.51

Pulsating or periodic output

275
219/130.01

Including circuits for monitoring arc parameters

200
219/127

Spot arc bonding (e.g., arc riveting)

46
219/121.12

Using electron beam

116
219/121.21

Chamber

64
219/121.23

Monitoring

19
219/121.22

Sealing

46
219/121.18

Cutting

34
219/121.19

Etching or trimming

57
219/121.2

Methods

86
219/121.15

Deposition (e.g., sputtering)

65
219/121.16

Melting

39
219/121.17

Methods

67
219/121.35

Methods

120
219/121.24

Nonvacuum environment

18
219/121.28

Position control

48
219/121.3

Condition responsive

37
219/121.29

Swept or scanned

44
219/121.34

Power supply

48
219/121.25

Shaping

45
219/121.27

With electrode or gun structure

64
219/121.26

With focusing

35
219/121.13

Welding

146
219/121.14

Methods

235
219/121.33

With fluid supply (e.g., shielding gas or coolant)

34
219/121.31

Workpiece position control

62
219/121.32

Condition responsive

17
219/121.6

Using laser

904
219/121.61

Beam energy control

406
219/121.62

Condition responsive

347
219/121.78

Beam position control

529
219/121.81

Condition responsive

107
219/121.79

Path adjustment

182
219/121.8

Swept or scanned

334
219/121.86

Chamber

102
219/121.67

Cutting

894
219/121.68

Etching or trimming

971
219/121.69

Methods

1270
219/121.7

Hole punching

436
219/121.71

Methods

550
219/121.72

Methods

596
219/121.65

Melting

306
219/121.66

Methods

440
219/121.85

Method

1052
219/121.76

Multiple beams

371
219/121.77

With sing source

278
219/121.73

Shaping

417
219/121.75

With lens

329
219/121.74

With mirror

369
219/121.63

Welding

940
219/121.64

Methods

1140
219/121.84

With fluid supply

608
219/121.83

With monitoring

581
219/121.82

Workpiece position control

582
219/121.36

Using plasma

472
219/121.54

Control systems

392
219/121.57

Arc ignition

262
219/121.56

Arc positioning

70
219/121.55

Gas supply

140
219/121.39

Cutting

269
219/121.4

Etching

159
219/121.41

Methods

185
219/121.42

Rate control

47
219/121.43

With chamber

553
219/121.44

Methods

199
219/121.37

Melting

113
219/121.38

Methods

74
219/121.59

Methods

529
219/121.48

Plasma torch structure

722
219/121.53

Consumable electrode

34
219/121.49

Cooling system

186
219/121.52

Electrode structure

625
219/121.51

Gas supply system

384
219/121.5

Nozzle system

404
219/121.47

Spray coating

282
219/121.45

Welding

157
219/121.46

Methods

155
219/121.58

With work holder

129
219/136

Welding

422
219/137R

Process

495
219/137PS

Power supply

351
219/137WM

Weld metal composition

229
219/124.1

With automatic positioning of arc

47
219/124.5

In response to the transfer rate of the weld metal

5
219/124.4

In response to work position

10
219/124.22

In response to work shape

49
219/124.34

By using probe means

329
219/124.31

Having carriage supported by work

34
219/124.33

Having electrode angle control

32
219/124.32

Having variable welding head travel rate (e.g., gravity feed)

11
219/124.21

Including work cutting

12
219/137.2

With consumable electrode device

140
219/137.31

Gun

121
219/137.62

Having cooling means

55
219/137.61

Having filler electrical contact structure

89
219/137.41

Having fume extractor

48
219/137.42

Having gas flow limiting shape (e.g., gas diffuser)

53
219/137.44

Having integral electrode guide

34
219/137.51

With flexibility

22
219/137.52

With wear resistant liner

13
219/137.43

Having spatter shield

40
219/137.63

Having supply connection means (e.g., quick disconnect)

52
219/137.8

Including filler wire deforming

19
219/137.7

Rate control

75
219/137.71

Circuits

167
219/137.9

Supply cables (e.g., for current, shielding gas, coolant)

63
219/124.02

With gap control

58
219/124.03

By arc voltage

35
219/124.01

With ignition by retraction

12
219/125.1

With predetermined welding operation

266
219/125.11

For closed path welding (e.g., circumferential welding)

228
219/125.12

For oscillating electrode welding

159
219/126

Vertical work (e.g., horizontal seam in vertical wall)

39
219/128

With working of bonding metal (e.g., by peening)

16
219/51

Chain

14
219/52

Methods

11
219/68

Cutting or disintegrating (e.g., machining engraving)

169
219/69.1

Electric arc

100
219/69.11

Electric spark machining

212
219/69.13

Circuits

346
219/69.14

Dielectric composition and purification

247
219/69.15

Electrodes

337
219/69.16

Gap spacing control

245
219/70

Hand-type tools

77
219/69.17

Methods

681
219/69.18

Pulse

209
219/69.19

Safety circuits

64
219/69.2

Vibrating electrodes or workpiece

250
219/69.12

Wire cutting

750
219/155

Endless strip

33
219/78.01

For bonding with pressure (e.g., resistance welding)

93
219/85.1

Brazing or soldering

72
219/85.16

Electrically heated tool (e.g., electrodes, heaters, etc.)

101
219/85.2

Fluxes or solders

29
219/85.17

Furnaces or enclosures

19
219/85.19

Machine for predetermined operation

35
219/85.22

Methods

99
219/85.21

Solder preforms

3
219/85.12

Utilizing radiant energy

80
219/85.13

Methods

64
219/85.18

Wire lead bonders

96
219/85.14

With filler metal in circuit

28
219/85.15

Methods

45
219/101

Butt

73
219/102

Extended seam

14
219/104

Methods

48
219/106

By use of a bridging member (e.g., splice plate)

16
219/107

End or edge to surface

57
219/105

Preparation of edges

40
219/103

One part fed

33
219/78.02

By solid-state bonding (e.g., diffusion)

39
219/86.1

By spot bonding

96
219/88

Electrode positionable along fixed bus bar (e.g., reaction bar type)

5
219/89

Fluid pressure actuated electrode

97
219/86.9

For one-face welding

39
219/91.2

Methods

120
219/92

Current limitation (e.g., by interposed insulation)

32
219/94

By interposed button

19
219/93

By localized projection

124
219/91.21

Of welding through insulation

50
219/91.22

With additional heating to same spot

5
219/91.23

With work deforming

25
219/87

Multiple spot type

89
219/90

Plier or tong type

62
219/91.1

With condition responsive control of the welding process

60
219/86.21

With hand-manipulative portable devices

25
219/86.22

With separately applied pressure and heat

17
219/86.25

With significant electrode support

140
219/86.33

Having adjustment means

30
219/86.7

For predetermined welding operation

55
219/86.41

With condition responsive control means

86
219/86.51

Responsive to pressure

43
219/86.61

By force balancing

12
219/86.31

Having cooling means

33
219/86.8

Having interchangeable welding electrodes

44
219/86.32

Having magnetic force actuated electrode

13
219/86.23

With welding pressure controlled by the work support

5
219/86.24

With work orientation means

57
219/119

Electrodes (e.g., structure)

255
219/120

With cooling

61
219/97

Flash

64
219/100

Methods

43
219/98

Stud

230
219/99

Methods

145
219/78.11

Honeycomb

14
219/78.12

Methods

18
219/117.1

Methods

295
219/118

Particular material (e.g., dissimilar, aluminum)

163
219/95

Percussive

17
219/96

Methods

8
219/81

Roller electrode

71
219/84

Electrode structure

52
219/83

Methods

74
219/82

Roller moves over work

32
219/108

Systems of current supply

68
219/110

Controlled in response to current, voltage, or temperature

287
219/111

Repeat or interrupted current systems (e.g., multiple welds, multiple heated weld)

20
219/112

Stored energy discharge (e.g., inductive)

10
219/113

Condenser discharge

40
219/115

Synchronous switching on and off

11
219/109

With indicator (e.g., recorder)

156
219/114

With space-discharge tube control (e.g., thyratron, ignitron)

36
219/116

With transformer

60
219/78.13

With additional heating device

11
219/79

With conveyer for workpiece

90
219/80

Spot bond

60
219/78.14

With work cleaning means

8
219/78.15

With work cutting means

30
219/78.16

With work deforming means (e.g., tube sealing)

37
219/76.1

For deposition welding (e.g., coating or building up)

113
219/76.14

By electric arc

213
219/76.16

Plasma

248
219/76.15

With nonconsumable electrode

58
219/76.17

By resistance heating

16
219/76.13

By spark discharge

52
219/77

Cutting edges of tools

29
219/76.12

Of multiple distinct layers

55
219/76.11

With cooling means

28
219/71

Liquid electrode

9
219/162

Methods

22
219/72

Nonatmospheric environment at hot spot (e.g., resistance weld under oil, vacuum)

121
219/74

Gas supply (e.g., by ingredient of electrode, by external source)

329
219/75

Nonconsumable electrode (e.g., atomic hydrogen)

518
219/73

Slag (e.g., submerged arc)

92
219/73.1

Including electroslag welding

55
219/73.11

For coating

14
219/73.2

With granular flux supply

38
219/73.21

For deposition welding

30
219/59.1

Of cylinders (e.g., pipes and tubes)

136
219/64

Container (e.g., cans)

112
219/60R

Electric arc

115
219/61

Methods

217
219/60A

Rotatable tube welders

153
219/60.2

Tube sheet welding

63
219/61.1

Having internal support means

24
219/61.12

With cleaning means

2
219/61.13

With edge guidance means

12
219/61.11

With forming means

15
219/62

Helical seam

22
219/66

Inside electrode

33
219/65

Nonrotary electrode (e.g., oscillating)

3
219/67

Resistance heating methods

39
219/63

Rotary transformer part

2
219/61.6

Using three or more electrodes

6
219/61.2

Utilizing high frequency resistance heating

46
219/61.4

With adjustable electrode means

11
219/61.5

With condition responsive control of the welding process

29
219/61.7

With cooling means

28
219/61.3

With edge guidance means

20
219/53

Rail bond

27
219/54

Arc weld

36
219/55

Resistance weld methods

19
219/157

Rivets

6
219/156

Rods and bars

16
219/146.1

Weld rod composition

125
219/146.23

Containing nickel, chromium, and iron

112
219/146.24

Metal deoxidizer or denitrogenizer

42
219/146.3

Particulate

33
219/146.21

Nonconsumable

19
219/146.22

Nonferrous

55
219/146.31

Particulate

46
219/146.32

Alloying

29
219/146.41

Nickel or chromium

43
219/146.51

Containing carbide

18
219/146.52

Shielding

22
219/147

With eye shield

47
219/145.1

Weld rod structure

71
219/145.23

Flux coated

64
219/145.31

Partially

11
219/145.32

With wire wrap

5
219/145.22

Flux cored

133
219/145.21

Nonconsumable

32
219/145.41

Nonmetal cover

7
219/56

Wire, rod, or bar bonding

117
219/57

Butt bonding (e.g., welding)

23
219/58

Methods

67
219/56.1

Of wire leads

84
219/56.21

By microbonding

97
219/56.22

Methods

164
219/149

With forging or shaping (e.g., of powder)

30
219/153

Bending or twisting

13
219/154

Subsequent to heating

6
219/150R

Upsetting

6
219/151

Anvil electrode

3
219/150V

Riveting

7
219/152

Simultaneous with heating

13
219/158

Work holders

94
219/161

Clamp

104
219/160

Mandrels (e.g., anvil)

64
219/159

Rotating supports

63
219/678

Microwave heating

155
219/725

Cookware (e.g., vessel, utensil, etc.)

230
219/727

Expandable

118
219/734

With cover

177
219/735

Having vent

143
219/733

With drainage

62
219/728

With field modifier

164
219/729

Shielding

173
219/726

With food mixer

32
219/730

With heat exchange (e.g., susceptor, etc.)

491
219/731

By fluent material (e.g., steaming, boiling, or frying, etc.)

91
219/732

With stand or handle

270
219/756

Enclosed cavity structure

355
219/758

With cavity illumination

39
219/757

With cooling or ventilation

399
219/745

Field modification

122
219/752

By load support movement

62
219/754

Horizontal (e.g., turntable, etc.)

171
219/755

Portable

36
219/753

Horizontal and vertical

41
219/751

Mixer (e.g., rotating stirrer, etc.)

96
219/746

With power feed structure

220
219/747

Phase shifting

15
219/748

Radiator (e.g., antenna, etc.)

166
219/749

Rotating

79
219/750

With tuning or particular modes

152
219/687

Fluid heater

151
219/689

Beverage (e.g., coffee, etc.)

73
219/688

Water

51
219/686

Gas environment (e.g., pressurized, etc.)

163
219/762

Load support

329
219/763

Shelf

81
219/736

Radiation protection

66
219/737

With leakage detector

16
219/738

With leakage prevention

114
219/744

Absorption

54
219/739

Door assembly

94
219/741

With choke or seal

62
219/743

Choke cavity cover

24
219/742

Slotted choke

39
219/740

With screen or window

43
219/698

Tunnel furnace

20
219/700

Conveyor

127
219/701

Plural heating zones

84
219/699

With leakage suppression

43
219/690

Waveguide applicator

113
219/695

Input power port arrangement

114
219/697

Plural feed

108
219/696

With tuning

101
219/691

Slotted

48
219/693

Having load passage

105
219/692

Meander (e.g., zigzag, etc.)

17
219/694

With dummy load

20
219/702

With control system

327
219/703

Defrost

76
219/722

Interlock circuitry and structure

73
219/723

With additional safety feature

65
219/724

With latch assembly

40
219/704

Load condition sensor

96
219/706

By ultrasonic or acoustic

22
219/709

Field intensity/reflection

80
219/707

Gas or vapor

139
219/705

Plural diverse types

86
219/710

Temperature

260
219/711

By infrared

77
219/712

Probe

66
219/713

Wireless type

18
219/708

Weight

94
219/715

Power switching

163
219/718

Having duty cycle

100
219/717

Plural power supplies

34
219/716

With detector

142
219/714

Remote (e.g., card, etc.)

89
219/721

Starting circuitry

53
219/720

With display or alarm

217
219/719

With timer

151
219/679

With diverse device

264
219/680

With diverse-type heating

95
219/681

Convection heating

183
219/683

Gas burner

24
219/682

Steam generating

70
219/684

Tunnel type

19
219/685

Resistive heating

213
219/759

With heat exchange (e.g., susceptor, etc.)

374
219/761

With specific generator

93
219/760

With specific transformer

46
 
 
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