Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 331
Name: Oscillators >
Description: This is the generic class for electrical oscillators.


Class Number Class Name No. of Patents
331/182

Amplitude control or stabilization

55
331/183

Automatic

201
331/1R

Automatic frequency stabilization using a phase or frequency sensing means

217
331/1A

Afc with logic elements

1448
331/15

Amplitude compensation

56
331/6

Klystron oscillator

4
331/7

Plural controls

5
331/5

Magnetron oscillator

9
331/3

Molecular resonance stabilization

117
331/9

Oscillator with distributed parameter-type discriminator

36
331/17

Particular error voltage control (e.g., intergrating network)

1652
331/34

Particular frequency control means

579
331/35

Electromechanical (e.g., motor)

5
331/36R

Reactance device (e.g., variable capacitors, saturable inductors, reactance tubes, etc.)

31
331/36C

Capacitor controlled afc

404
331/36L

Inductor controlled afc

34
331/10

Plural a.f.s. for a single oscillator

242
331/13

Motor control of oscillator

1
331/11

Plural comparators or discriminators

444
331/12

With phase-shifted inputs

126
331/2

Plural oscillators controlled

491
331/4

Search sweep of oscillator

179
331/8

Transistorized controls

290
331/16

Tuning compensation

1003
331/14

With intermittent comparison controls

460
331/18

With reference oscillator or source

418
331/22

Plural significant heterodyne stages

42
331/23

Sensing modulation (e.g., frequency modulation controlled oscillator

233
331/24

With motor comparator

1
331/25

Signal or phase comparator

1847
331/29

Electromechanical

0
331/27

Plural active element (e.g., triodes)

176
331/26

Plural diode type

8
331/28

Unilateral element (e.g., diode)

3
331/19

Spectrum reference source

51
331/20

T.v. sync type

147
331/21

Lock to power line

10
331/30

With stable heterodyne oscillator or source

26
331/31

Plural significant heterodyne stages

25
331/32

With particular discriminator (e.g., lpf and hpf)

15
331/33

Plural diode type

1
331/79

Beam tube

36
331/80

With beam sweeping or deflecting means

1
331/81

With electron bunching or velocity variation means

7
331/83

Multicavity type (e.g., klystron)

21
331/84

Reflex type (i.e., with repeller electrode)

3
331/82

Traveling wave type

31
331/37

Beat frequency

49
331/40

Frequency or amplitude adjustment or control

61
331/41

Frequency stabilization

31
331/38

Plural beating

38
331/39

Single channel

19
331/42

With particular signal combining means (e.g., cavity mixer)

23
331/43

With filter in mixer output circuit

19
331/138

Bridge type

11
331/139

Piezoelectric crystal in bridge

8
331/140

R.c. or r.l. type

11
331/142

Double t bridge

3
331/141

Wien bridge

11
331/95

Butterfly resonator

0
331/74

Combined with particular output coupling network

451
331/75

Space discharge or unilaterally conductive device in output network

79
331/76

Harmonic producing or selecting network

68
331/77

Wave filter

67
331/59

Convertible (e.g., oscillator to amplifier, etc.)

23
331/78

Electrical noise or random wave generator

263
331/154

Electromechanical resonator

80
331/158

Crystal

739
331/164

Anode or cathode to grid crystal circuit

0
331/163

Crystal having three or more electrodes in circuit

21
331/162

Plural crystals in circuit

32
331/159

Plural tube

15
331/161

With crystal substitution

13
331/160

With means to limit crystal current or voltage

40
331/157

Magnetostrictive

6
331/156

Vibrating reed or string type (e.g., tuning fork)

68
331/155

With optical, piezoelectric or acoustic coupling means

35
331/72

Electron-coupled type

0
331/73

Piezoelectric crystal resonator

12
331/175

Frequency stabilization

423
331/176

Temperature or current responsive means in circuit

595
331/126

Gaseous space discharge device

3
331/128

Drives shock excited l.c. circuit

4
331/129

Relaxation oscillator

4
331/131

Discharge device or rectifier in "c" or "l" charging or discharging circuit

0
331/130

Plural gaseous devices

1
331/127

Spark or open arc type

10
331/184

Having discharged device or particular construction

9
331/167

L-c type oscillators

274
331/169

Anode to cathode coupled or connected resonant circuit

2
331/170

Anode to grid coupled or connected resonant circuit

2
331/171

Grid to cathode coupled or connected resonant circuit

2
331/168

Plural tubes

9
331/DIG.3

Logic gate active element oscillator

115
331/187

Miscellaneous oscillator structures

29
331/94.1

Molecular or particle resonant type (e.g., maser)

131
331/132

Negative resistance or negative transconductance oscillator

32
331/133

Secondary emission (e.g., dynatron)

1
331/134

Transitron type

1
331/DIG.2

Phase locked loop having lock indicating or detecting means

455
331/135

Phase shift type

154
331/137

With r.c. ladder-type phase shift network

14
331/136

Zero phase shift

7
331/58

Plural functions simultaneously

4
331/46

Plural oscillators

214
331/48

Adjustable frequency

77
331/50

Cascade or tandem connected

37
331/54

Diverse-type oscillators

7
331/51

Frequency dividers

44
331/53

Frequency multiplier

25
331/52

Semiconductor (e.g., transistor)

10
331/47

Oscillator used to vary amplitude or frequency of another oscillator

104
331/56

Parallel connected

166
331/49

Selectively connected to common output or oscillator substitution

233
331/55

Synchronized, triggered or pulsed

119
331/45

Polyphase output

209
331/63

Protective of safety devices for personnel

3
331/71

Raw a.c. used as source of power or bias

5
331/143

Relaxation oscillators

332
331/146

Blocking oscillators

3
331/147

Using discharge device with plural grids

1
331/148

With 3 or more winding feedback transformers

1
331/149

With sync, trigger, or pulsing circuit (e.g., self-pulsing)

6
331/151

Involving resonant or inductive wave forming circuit or transformer

12
331/152

Multi-grid discharge device in charged capacitor circuit

0
331/144

Multivibrators

50
331/145

With sync, triggering or pulsing circuit

18
331/150

Output supplied to another discharge device circuit

11
331/153

With sync, trigger or pulsing circuit

31
331/92

Retarding field tube-type oscillators (e.g., barkhausen kurz)

0
331/93

With distributed parameter resonator

1
331/57

Ring oscillators

1071
331/165

Shock excited resonant circuit

18
331/166

With keying means of the active element type (e.g., burst generator)

16
331/60

Single oscillator with plural output circuits

89
331/61

Plural outputs of diverse wave form

11
331/107R

Solid state active element oscillator

118
331/107A

Acoustoelectric device oscillators

159
331/107G

Gunn-type bulk effect device oscillators

86
331/107DP

Significant distributed parameter resonator (e.g., cavity)

206
331/107C

Coaxial type

26
331/107P

Parallel-connected oscillator devices

56
331/107SL

Stripline type

186
331/107S

Superconductive device oscillators

28
331/108R

Transistors

60
331/109

Amplitude stabilization and control

133
331/110

Bridge type

16
331/116R

Electromechanical resonator controlled

434
331/116M

Electromechanical resonators other than piezoelectric crystals

55
331/116FE

Field-effect transistor active element

345
331/108C

Integrated circuit oscillators

178
331/108D

Integrated modules with discrete elements oscillators

182
331/117R

L-c type

691
331/117D

Distributed parameter resonator transistor oscillators

356
331/117FE

Field-effect transistor active element

409
331/115

Negative resistance

66
331/108B

Phase shift oscillator

101
331/114

Push-pull

47
331/111

Relaxation oscillator

446
331/112

Blocking oscillator type

56
331/113R

Multivibrator type

171
331/113S

Converter using silicon control rectifiers

3
331/113A

Saturable core controlled converters

94
331/108A

Use of complimentary-type transistors

44
331/107T

Tunnel diode oscillators

15
331/104

Transit time oscillator

4
331/103

Tube structure forms inductive part of resonant circuit

4
331/65

With device responsive to external physical condition

368
331/66

Temperature or light responsive

287
331/96

With distributed parameter resonator

404
331/101

Coaxial or shielded line type

60
331/102

Push-pull type

7
331/99

Parallel wire type

135
331/100

Push-pull type

21
331/97

Tube enclosed by resonator structure

11
331/98

Disk seal tube (e.g., lighthouse, pencil tube)

1
331/67

With electromagnetic or electrostatic shield

36
331/177R

With frequency adjusting means

776
331/178

Cyclic frequency sweeping means (e.g., vibrato)

69
331/180

Reactance tube type

2
331/179

Step-frequency change (e.g., band selection, frequency-shift keying)

502
331/181

Variable inductance device (e.g., saturable core or adjustable vane inductor)

60
331/177V

With voltage sensitive capacitor

783
331/44

With frequency calibration or testing

242
331/64

With indicator, signal, or alarm

67
331/86

With magnetically controlled space discharge device (e.g., magnetron)

38
331/90

With frequency adjustment

37
331/88

With frequency stabilization

16
331/87

With particular pulsing means

26
331/89

With secondary emissive electrode

3
331/91

With undesired mode suppression or selection means

21
331/62

With oscillator circuit protective means

18
331/68

With outer casing or housing

149
331/69

With temperature modifier

67
331/105

With parasitic oscillation control or prevention means

42
331/185

With particular source of power or bias voltage

268
331/186

Regulated

168
331/106

With periodoic or repetitious amplitude varying means (e.g., tremolo)

5
331/172

With synchronizing, triggering or pulsing circuits

116
331/173

Triggering or pulsing (e.g., burst generators)

178
331/174

Self-quenched

7
331/70

With temperature modifier

34
 
 
  Recently Added Patents
Multi-function heat exchanger
Image forming apparatus having control of transportation unit fans according to sheet width
Semiconductor assembly with component attached on die back side
Orthopedic cutting block
Tripod slat end piece with a highly stabilised range of movement
Photocleavable fluorescent nucleotides for DNA sequencing on chip constructed by site-specific coupling chemistry
Interface method and system for mapping image intensity
  Randomly Featured Patents
Self-propelled mower having enhanced maneuverability
Control of gas content in process liquids for improved megasonic cleaning of semiconductor wafers and microelectronics substrates
Electronic camera
Novel aminoalkyl-substituted heterocyclic sulfur compounds
Temperature measurement in power generator boilers
Ring
Method of thick film planarization
Process for the production of urea
Wheat flour and wheat flour composite for breadstuff
Drywall knife or blade refinisher tool