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Class Information
Number: 307
Name: Electrical transmission or interconnection systems >
Description: This is the residual class for all subject matter, not elsewhere classified, relating to electrical transmission or interconnection systems.










Class Number Class Name No. of Patents
307/95

Anti-electrolysis

45
307/89

Anti-induction or coupling to other systems

61
307/90

Inducing current control

17
307/91

Magnetic or electrostatic field control (e.g., shielding)

125
307/109

Capacitor

213
307/110

Parallel-charge, series-discharge (e.g., voltage doublers)

333
307/98

Combined impedance and switch systems

61
307/99

Condition responsive switch

35
307/147

Conductor arrangements or structure

383
307/148

Multipart-conductor current equalization

19
307/DIG.1

Data transmitted over power lines

14
307/400

Electrets

169
307/104

Electromagnet or highly inductive systems

436
307/96

Intermittent regulatory interruption of system

12
307/97

Condition responsive

22
307/149

Miscellaneous systems

228
307/151

Conversion systems

197
307/154

For particular load device

81
307/157

Lamp or discharge device

88
307/155

Plural diverse load devices

31
307/156

Structural load device combinations

11
307/153

Generator control systems

31
307/150

Power packs

351
307/152

Rate of change responsive systems

31
307/401

Nonlinear reactor systems (e.g., saturable)

18
307/416

Amplifiers using nonlinear reactors (i.e., magnetic amplifiers)

10
307/418

With feedback

6
307/417

With transistors

5
307/412

Driver circuits

45
307/407

Logic circuits

21
307/409

Clocking, delay or transmission line

29
307/411

Exclusive or, and logic circuit

8
307/408

Multiaperture

9
307/410

Nor, not logic circuit

6
307/406

Magnetic flip-flops

5
307/419

Magnetic pulse generator

31
307/420

Using multivibrator

2
307/421

With specified output waveform

1
307/415

Magnetic switching circuits

28
307/414

Magnetic trigger devices

2
307/422

Multiaperture

0
307/423

Three apertures or ladder

0
307/424

Parametric frequency converter

27
307/402

Parametrons

1
307/403

Thin film parametrons

0
307/404

Using logic circuits

2
307/405

Using pump energizer

4
307/413

Signal sensor (e.g., current or frequency)

27
307/111

Nonresponsive-to-frequency-change systems

6
307/326

Personnel safety or limit control features

286
307/328

Interlock

82
307/327

Parasitic current suppression

18
307/11

Plural load circuit systems

228
307/30

Anticoupling of load circuits through same source

53
307/42

Circuit arrangements or layouts

93
307/12

Common conductor or return type

50
307/16

Plural output generators

54
307/13

Polyphase

27
307/14

Phase balancing

21
307/15

Voltage divider type

18
307/31

Control of current or power

437
307/33

Constant magnitude control

39
307/34

By control of one or more load circuits

86
307/35

Limit control

142
307/32

Load current proportioning or dividing

119
307/18

Plural sources of supply

245
307/25

Diverse sources

47
307/26

Ac and dc

56
307/27

Different frequencies

12
307/28

Different voltages

59
307/19

Interconnected for energy transfer

118
307/21

Diverse sources

26
307/22

Ac and dc

42
307/20

With control of magnitude of energy transfer

45
307/29

Selectively connected loads and/or sources

255
307/23

Substitute or alternate source

120
307/24

With control of magnitude of current or power

88
307/38

Selectively connected or controlled load circuits

638
307/40

Code-controlled

160
307/39

Condition responsive

481
307/41

Sequential or alternating

240
307/36

Serially connected load circuits

69
307/37

Selective series-parallel connections

35
307/17

Transformer connections

146
307/43

Plural supply circuits or sources

462
307/51

Circulating- or inter-current control or prevention

56
307/85

Connecting or disconnecting

330
307/86

Condition responsive

291
307/87

Attainment of voltage, frequency or phase relationship

360
307/72

Diverse or unlike electrical characteristics

115
307/74

Differing capacities

14
307/73

Differing frequencies

42
307/75

Differing voltages

146
307/76

Generator sources

17
307/52

Load current control

167
307/60

Constant load or current

48
307/61

Serially connected sources

12
307/53

Load current division

59
307/55

Fixed or predetermined ratio

12
307/56

Diverse-or unlike-type sources

25
307/58

Plural converters

89
307/57

Plural generators

45
307/59

Peak or excess load

27
307/54

Serially connected sources

12
307/62

Load-limiting

27
307/63

Serially connected sources

28
307/70

Load transfer without paralleling sources

61
307/44

One source floats across or compensates for other source

214
307/47

Dynamoelectric-type source

40
307/48

Storage battery or accumulator-type source

185
307/50

Tap-changing or variable number of cells

10
307/49

With series-connected auxiliary source

9
307/45

With intervening converter

158
307/46

Storage battery or accumulator-type source

223
307/82

Plural converters

451
307/84

Plural generators

152
307/83

Plural transformers

65
307/80

Selective or optional sources

369
307/81

Predetermined sequence

75
307/77

Series-connected sources

93
307/78

Generator sources

11
307/71

Series-parallel connection of sources

113
307/69

Sources distributed along load circuit

41
307/64

Substitute or emergency source

1197
307/68

Dynamoelectric

80
307/65

Plural substitute sources

232
307/66

Storage battery or accumulator

1402
307/67

With intervening dynamoelectric machine

39
307/101

Residual or remanent magnetism control

29
307/100

Shunting or short circuiting systems

52
307/102

Stabilized, anti-hunting or antioscillation systems

66
307/1

Superimposed unlike currents

85
307/2

Ac and dc sources

66
307/3

Different frequencies or phase

206
307/4

Different voltages

42
307/5

Series-connected

9
307/6

Plural converters

9
307/7

Induction transformer

11
307/8

Plural generators

5
307/112

Switching systems

450
307/116

Condition responsive

731
307/125

Electrical

658
307/128

Ac or dc discriminating

29
307/131

Current

196
307/129

Frequency

92
307/127

Polarity, phase sequence or reverse flow

241
307/126

Power or energy

245
307/130

Voltage

385
307/118

Fluid pressure, density, level, velocity or humidity

273
307/117

Light, heat, vibratory or radiant energy

533
307/119

Mechanical force

177
307/120

Speed, centrifugal or kinetic force

30
307/123

Differential speed between two bodies

7
307/122

Direction of rotation

20
307/121

Inertia or acceleration

63
307/124

Torque

6
307/113

Plural switches

249
307/114

Lazy-man switch type

50
307/115

Selectively actuated

383
307/132R

Repetitive make and break

44
307/132E

Electronically controlled relay

86
307/132EA

Responsive to physical condition

28
307/132M

Miscellaneous

10
307/132T

Thermal relay

6
307/132V

Vibrating relay

1
307/139

Switch actuation

303
307/143

Electrical actuator

44
307/144

Fluid-pressure actuator

18
307/140

Power circuit controlled

468
307/142

With locking, holding or braking means

57
307/141

With time delay or retardation means

367
307/141.4

Electrically initiated

178
307/141.8

Series connected switches

54
307/134

With operation facilitating feature

84
307/135

Preliminary reduction in current or voltage of system

46
307/137

Switch contact conditioning

50
307/138

Polarity reversing

35
307/146

Unidirectional conductor systems

32
307/9.1

Vehicle mounted systems

1111
307/10.1

Automobile

2395
307/10.2

Antitheft

834
307/10.3

Ignition or starting circuit lock

404
307/10.5

Coded record input (e.g., ic card)

323
307/10.4

Manual code input (e.g., push button)

188
307/10.7

Battery protection

307
307/10.6

Ignition or starter circuits

368
307/10.8

Lighting circuits

572
307/106

Wave form or wave shape determinative or pulse-producing systems

330
307/108

With capacitor

156
307/107

With rectification or derectification

48
307/145

With current collection or transfer

25
307/105

With harmonic filter or neutralizer

243
307/103

With line drop compensation

48
307/650

With nonswitching means responsive to external nonelectrical condition

57
307/653

Flame responsive (e.g., flame acts as a rectifier in circuit)

22
307/652

Responsive to approach or passage of an object

89
307/651

Temperature responsive

35
 
 
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