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Class Information
Number: 335
Name: Electricity: magnetically operated switches, magnets, and electromagnets >
Description: 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.


Class Number Class Name No. of Patents
335/1

Combined diverse switches (e.g., manual-actuated and art type)

10
335/2

Electromagnetically actuated switches

21
335/99

Alternating or fluctuating current type

0
335/100

Induction or eddy current (e.g., vane or closed conductive loop)

4
335/102

Polyphase

0
335/101

Preselected or synchronous frequency responsive

1
335/104

With chatter, bounce or vibration-prevention means

9
335/105

With damping or adjustment means

8
335/103

With plural magnetic-actuating structures

4
335/6

Automatic circuit-interrupting devices (e.g., circuit-protective devices)

261
335/8

Multipole or polyphase

113
335/10

With common latch or trip means

39
335/9

With individual latch or trip means in each leg

35
335/11

Plural switches

22
335/7

Responsive to plural diverse circuit conditions (e.g., voltage and current)

12
335/18

Responsive to predetermined or abnormal current condition (e.g., direction, phase angle or amplitude)

223
335/19

Zero current

8
335/20

Voltage responsive (under, over or no voltage)

116
335/13

With auxiliary switch means (e.g., for energizing coil)

61
335/15

With contact biasing, holding or pressure control means

35
335/16

Magnetic or electrodynamic (e.g., blowon or blowoff)

303
335/46

With contact rebound or other undesirable motion prevention means

28
335/14

With direct connected contact separating means

103
335/21

With latch or trip means

123
335/38

Magnetic

51
335/42

With adjusting or calibrating means

67
335/41

With magnetic flux winding directly in series with main contacts

14
335/39

With time delay (e.g., thermal)

8
335/40

Responsive to or proportional to degree of overload condition

3
335/22

Plural latch or combined latch operating means for single latch

30
335/23

With diverse-type actuating means (e.g., magnetic and thermal)

95
335/35

Plural trips or combined operating means for single trip (e.g., magnetic with thermal)

185
335/36

With common structural elements

10
335/37

With thermal element comprising magnetic flux source

26
335/26

Reclosing or resetting

40
335/27

Automatic combined with manual

24
335/28

Automatic combined with timing or delay means

4
335/29

Fluid-controlled

5
335/30

Mechanical motor-controlled (e.g., clock movement)

3
335/31

Thermally actuated

7
335/32

With counting or integrating means (e.g., repetitive for given number of reclosures)

4
335/34

With lockout

8
335/33

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)

2
335/43

Thermal

29
335/44

Including ambient temperature compensating means

4
335/45

With regulating, adjusting or calibrating means

51
335/24

Trip-free (i.e., cannot be manually reclosed while overload exists)

20
335/25

With disabling means (for contact-actuator)

7
335/12

With shunting contacts

5
335/17

With switch condition signalling, indicating or alarm means

153
335/196

Contact composition or structure

81
335/197

Adjustable or readily detachable

16
335/198

Convertible from normally open to normally closed and vice versa

15
335/200

Pivoted or relatively movable independently of the armature

18
335/199

Printed circuit

13
335/165

Contact-actuating means unitary with latch or trip

16
335/185

Contact-actuating means

53
335/189

Mechanical linkage

47
335/191

Compound motion device (e.g., toggle)

48
335/190

Including cam, roller or eccentric means

65
335/186

Plural or combined (e.g., manual with other)

51
335/188

Snap-action

20
335/187

Unitary with armature

24
335/192

With biasing means (open or closed)

40
335/194

With pressure-maintaining or adjusting means

24
335/195

Magnetic or electrodynamic force

161
335/193

With vibration-, bounce- or chatter-prevention means

42
335/147

Electrodynamically actuated

88
335/148

Moving coil type

7
335/149

Plural coils

3
335/150

With reset or restoring means

6
335/167

Latching means

149
335/171

Including spring-biasing or energy-storage means

36
335/170

Magnetically operated

54
335/169

Plural or with auxiliary latch

21
335/168

With positive lock (against movement)

19
335/164

Manually or gravity-operated latch with electromagnetic trip

35
335/106

Multiple contact type

49
335/133

Contact structure or arrangement

68
335/134

Grid or coordinate

0
335/135

In pile or stack

39
335/107

Contacts-selectively, sequentially, alternately, or intermittently actuated

15
335/108

Automatic telephone type

2
335/118

Motor-driven

2
335/109

Plural or multidirection mechanical selector motions

0
335/111

Selector structure

1
335/112

Crossbar type

25
335/110

With motion-conversion means

0
335/115

Reciprocating selector motion (e.g., sliding)

1
335/114

Rotary selector motion

5
335/113

With holding, locking or latching means

10
335/117

With operational mode-varying means

0
335/116

With reset or selector-restoring means

7
335/121

Contact-actuation means

15
335/124

Armature structure

22
335/125

Rotary armature

19
335/126

Reciprocating or linearly sliding

119
335/122

With rotary or compound motion device (e.g., rack and pinion)

9
335/123

Pawl and ratchet

7
335/119

Plural armatures

15
335/120

With interlocking or mechanical connection

7
335/127

Simultaneously actuated

24
335/128

By pivotal or rockable armature

314
335/130

Movable contacts on circular card or comb structure

27
335/129

Movable contacts or slidable card bar or comb

75
335/131

By reciprocating armature

194
335/132

With adjustable, replaceable or interchangeable structural features

372
335/136

With plural magnet or coil means

22
335/137

Of diverse type

4
335/87

Periodic (e.g., vibrators)

2
335/91

Actuating magnet structure or material

2
335/92

Plural magnets

1
335/95

Armature

1
335/96

Adjustable

1
335/97

Contact arrangement or composition

3
335/98

Adjustable contacts

0
335/88

Plural periodic switches or with plural pairs of contacts

5
335/89

Selectively, alternately, or consecutively actuated

5
335/93

Vibratory reed or other periodic contact actuator

4
335/94

Tuned or resonant at a particular frequency

0
335/90

With vibrating or oscillating element damping, frequency adjusting or vibration control

6
335/159

Plural independently operable switches

34
335/160

Interlocking

43
335/161

With cooperative-actuating means

21
335/162

With unitary housing, support or flux path

22
335/163

With unitary or common magnetic flux source

4
335/177

Plural magnets or flux sources

72
335/183

Magnetic fields or torques acting alternately in opposite directions

15
335/178

Of diverse electrical characteristics

7
335/179

Of diverse magnetic characteristics (e.g., permanent plus electromagnet)

92
335/180

With common core or single armature

13
335/182

Magnetic fields opposing (e.g., differential)

13
335/181

Pivoted armature

28
335/184

With plural reciprocating armatures aligned or rigidly connected

6
335/78

Polarity-responsive

543
335/80

Armature structure

172
335/82

Floating (i.e., no fixed pivot)

20
335/81

Freely movable within coil or magnetic field between poles

58
335/83

Contact structure of composition

146
335/84

Magnetic structure (e.g., saturable)

32
335/85

Pole structure

59
335/79

Storage or memory type (e.g., bistable)

54
335/86

With adjusting means

37
335/4

Radio frequency switch (e.g., t/r switch)

54
335/5

With coaxial components

35
335/59

Retarded or delayed type

23
335/67

Adjustable or regulatable

2
335/66

Electrothermal delay means

2
335/60

Plural sets of contacts alternately, consecutively or selectively opened or closed

8
335/62

With hydraulic delay means

9
335/63

With magnetic or electromagnetically actuated delay means

16
335/64

With mechanical delay means

5
335/65

Motor or motor-controlled (e.g., clockwork)

2
335/61

With pneumatic delay means (e.g., dashpot, etc.)

19
335/138

Step-by-step type (e.g., closure responsive to predetermined number of control pulses

8
335/140

Ratchet and pawl-type actuator

10
335/139

With timing or indexing means (e.g., clock mechanism)

3
335/204

Through conductor type (i.e., conductor field actuates armature)

5
335/172

Tripping means

309
335/174

Magnetically operated

100
335/175

Utilizing hammer or other impacting means

41
335/176

With adjusting or regulating means

86
335/173

Plural diverse (e.g., manual plus electromagnet)

41
335/47

Utilizing conductive liquid (e.g., mercury)

47
335/55

Armature structure

9
335/56

Comprising freely movable floating slug or mass

10
335/48

Comprising three or more electrodes or circuit-completion means

4
335/57

Contact or electrode structure

12
335/58

Mercury or mercury wetted

47
335/49

With liquid-displacement means

23
335/50

Comprising plural interconnected liquid containers

3
335/51

Magnetic

19
335/52

Piston or plunger

11
335/53

Combined with timing or delay means

3
335/54

Tiltable or rotating liquid chamber

6
335/3

Utilizing magnetostrictive elements

9
335/151

Vacuum or hermetically sealed type (e.g., reed switch)

153
335/154

Armature, contact or contact-actuating means (e.g., sealed reed)

101
335/152

Plural

38
335/153

With permanent magnet structure

63
335/201

With arc-suppression or extinguishing means

172
335/203

With armature structure

45
335/141

With electrothermal-actuating means (e.g., expansible wire)

6
335/145

Bimetallic element

16
335/142

Fusible element

9
335/143

Independently operative

0
335/146

Thermomagnetic (e.g., device whose magnetic permeability changes with temperature)

23
335/144

With armature positioning or adjusting

2
335/202

With housing or support means

604
335/166

With latch- or trip-reset means

64
335/68

With motor

51
335/71

Contact actuating structure

20
335/76

Comprising energy storage means (e.g., wound spring)

26
335/73

Eccentric or cam

9
335/74

Including brake, clutch or detent

8
335/75

Magnetically actuated

12
335/72

Plural contacts

11
335/70

Frequency-responsive or synchronous

3
335/69

Reversible or oscillatable

7
335/77

With locking, latch or tripping structure

11
335/157

With operation-inhibiting means (shock resistant)

21
335/158

From open position

4
335/155

With predetermined current or voltage value-responsive actuator

8
335/156

With protective means for switch or contacts

31
335/209

Magnets and electromagnets

53
335/283

Blade sharpening or conditioning type magnets

2
335/219

Combined with diverse-type art device

83
335/210

Electron or ion beam deflecting type

415
335/212

With adjustable magnetic element (e.g., to change the air gap, or its position on the cathode ray tube)

162
335/213

With coil structure

345
335/214

With electric or magnetic-shielding means

84
335/211

With magnetic shunt

82
335/284

For magnetizing or demagnetizing

210
335/296

Magnet structure or material

361
335/299

Coil structure or material

451
335/300

With cooling means

112
335/297

Core structure

171
335/298

Movable or adjustable cores

84
335/302

Permanent magnets

305
335/303

Enclosed in flexible plastic, cloth or tape

114
335/305

Magnetic plug type (e.g., crankcase plug)

26
335/306

Plural magnets

508
335/304

With flux leakage-reducing means

96
335/301

With electric- or magnetic-shielding means

248
335/215

Magnetostrictive-type device

57
335/216

Superconductive type

745
335/217

Temperature-responsive type (e.g., temp. compensation means)

40
335/218

With time-delay means

2
335/220

With magneto-mechanical motive device (e.g., electromagnet with armature)

147
335/243

Alternating current type

7
335/250

Coil construction or mounting means

21
335/244

Flux phase displacement or varying means

10
335/246

Plural winding type

9
335/245

Shading coil

17
335/247

With chatter- or noise-preventing means

14
335/249

Special armature construction or mounting means (e.g., to assure positive seating of armature)

12
335/248

Spring or cushion-type vibration absorber

9
335/251

With plunger-type armature

54
335/252

With vibrating armature

5
335/279

Armature shape, structure or material

144
335/280

Balls, filings or granular material

18
335/270

Armature-mounting means

55
335/275

Hinge joint type armature-mounting means

23
335/276

Pivot support type armature-mounting means

79
335/272

Rotating disk or cylindrical armature

116
335/271

With armature bounce or vibration-preventing means

41
335/273

With armature-adjusting means (e.g., means to adjust the relative distance between core and armature)

43
335/274

With armature-biasing means or bias-adjustment means

128
335/282

Coil shape, structure or material

57
335/281

Core or pole shape, structure or material

196
335/221

Frequency-responsive type

4
335/265

Plural armatures actuated by single electromagnetic coil

34
335/266

Plural coils or magnets control armature movement

117
335/268

Coils or magnets being separately or selectively controllable

64
335/267

With plural armatures

33
335/227

Saturable magnetic type

19
335/236

With a shunt path for magnetic flux

54
335/237

Adjustable

19
335/253

With armature latch means (e.g., means to retain armature in open or closed position

53
335/254

With latch-control winding

17
335/238

With auxiliary armature-movement control means (e.g., manual)

24
335/278

With casing or enclosure

132
335/269

With dynamically balanced armature

7
335/228

With motion-conversion means (e.g., reciprocating to rotary motion)

40
335/229

With permanent magnet

296
335/230

Polarized electromagnet

138
335/231

Varying alternating current amplitude responsive

29
335/232

With plural armatures

16
335/233

With armature-locking means

6
335/234

With reversible magnetic flux-type movement (e.g., bistable type)

170
335/235

With vibrating reed or spring bar-type armature

9
335/255

With plunger-type armature

166
335/261

Armature structure or material

99
335/264

Sectional plunger

16
335/262

With centering or aligning or guiding means

124
335/263

With plunger rotation preventing means (e.g., means to prevent undesired rotation of the plunger during movement)

21
335/256

Plural coils controlling a single armature

79
335/259

Plural plungers

28
335/258

With armature stroke adjustment

75
335/260

With sealed enclosure (e.g., dust or moistureproof)

67
335/257

With shock-absorbing means (e.g., means to absorb the shock of armature or plunger)

71
335/222

With relatively movable coil and permanent magnet (e.g., d'arsonval type) position on the cathode ray tube)

101
335/223

With relatively movable conductors (e.g., dynamometer)

33
335/224

Induced current-type movable conductor (e.g., eddy current member)

12
335/225

Rotating disk

19
335/226

Short-circuited winding

14
335/277

With shock absorption, vibration or bounce-preventing means

74
335/239

With time delay armature-movement control means

13
335/241

Auxiliary control coil

1
335/240

Dashpot type

20
335/242

With plural armatures selectively retarded

7
335/285

Work or object holding type

211
335/289

Electromagnet type (e.g., electromagnetic chuck)

60
335/291

Lifting or attracting type (e.g., for lifting pigiron or pulling hairpins)

37
335/293

Hand-held type

4
335/292

Hermetically sealed or moisture-proofed

11
335/294

With outer casing or housing

20
335/290

With circuit control means

18
335/288

Rotary-type magnetic chuck (permanent or electromagnet type)

41
335/295

With magnetic-hold control means (e.g., means to control the hold strength)

64
335/286

With workpiece to magnet adapted or fixture (e.g., to bridge flux)

33
335/287

Angularly adjustable fixture

5
335/205

Permanent magnet-actuated switches

413
335/207

Plural magnets

273
335/206

Plural switches

140
335/208

Thermomagnetic

34
 
 
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