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Class Number: 331
Class Title: OSCILLATORS
Subclass Subclass
Number Title
94.1 MOLECULAR OR PARTICLE RESONANT TYPE (E.G., MASER)
1 R AUTOMATIC FREQUENCY STABILIZATION USING A PHASE OR
FREQUENCY SENSING MEANS
2 .Plural oscillators controlled
3 .Molecular resonance stabilization
4 .Search sweep of oscillator
5 .Magnetron oscillator
6 .Klystron oscillator
7 ..Plural controls
8 .Transistorized controls
9 .Oscillator with distributed parameter-type discriminator
10 .Plural A.F.S. for a single oscillator
11 ..Plural comparators or discriminators
12 ...With phase-shifted inputs
13 ..Motor control of oscillator
14 .With intermittent comparison controls
15 .Amplitude compensation
16 .Tuning compensation
17 .Particular error voltage control (e.g., intergrating network)
18 .With reference oscillator or source
19 ..Spectrum reference source
20 ..T.V. sync type
21 ...Lock to power line
22 ..Plural significant heterodyne stages
23 ..Sensing modulation (e.g., frequency modulation controlled
oscillator
24 ...With motor comparator
25 ..Signal or phase comparator
26 ...Plural diode type
27 ...Plural active element (e.g., triodes)
28 ...Unilateral element (e.g., diode)
29 ...Electromechanical
30 .With stable heterodyne oscillator or source
31 ..Plural significant heterodyne stages
32 ..With particular discriminator (e.g., LPF and HPF)
33 ...Plural diode type
34 .Particular frequency control means
35 ..Electromechanical (e.g., motor)
36 R ..Reactance device (e.g., variable capacitors, saturable
inductors, reactance tubes, etc.)
36 C ...Capacitor controlled AFC
36 L ...Inductor controlled AFC
1 A .AFC with logic elements
37 BEAT FREQUENCY
38 .Plural beating
39 ..Single channel
40 .Frequency or amplitude adjustment or control
41 .Frequency stabilization
42 .With particular signal combining means (e.g., cavity mixer)
43 ..With filter in mixer output circuit
44 WITH FREQUENCY CALIBRATION OR TESTING
45 POLYPHASE OUTPUTT
46 PLURAL OSCILLATORS
47 .Oscillator used to vary amplitude or frequency of another
oscillator
48 .Adjustable frequency
49 .Selectively connected to common output or oscillator
substitution
50 .Cascade or tandem connected
51 ..Frequency dividers
52 ..Semiconductor (e.g., transistor)
53 ..Frequency multiplier
54 ..Diverse-type oscillators
55 .Synchronized, triggered or pulsed
56 .Parallel connected
57 RING OSCILLATORS
58 PLURAL FUNCTIONS SIMULTANEOUSLY
59 CONVERTIBLE (E.G., OSCILLATOR TO AMPLIFIER, ETC.)
60 SINGLE OSCILLATOR WITH PLURAL OUTPUT CIRCUITS
61 .Plural outputs of diverse wave form
62 WITH OSCILLATOR CIRCUIT PROTECTIVE MEANS
63 PROTECTIVE OF SAFETY DEVICES FOR PERSONNEL
64 WITH INDICATOR, SIGNAL, OR ALARM
65 WITH DEVICE RESPONSIVE TO EXTERNAL PHYSICAL CONDITION
66 .Temperature or light responsive
67 WITH ELECTROMAGNETIC OR ELECTROSTATIC SHIELD
68 WITH OUTER CASING OR HOUSING
69 .With temperature modifier
70 WITH TEMPERATURE MODIFIER
71 RAW A.C. USED AS SOURCE OF POWER OR BIAS
72 ELECTRON-COUPLED TYPE
73 .Piezoelectric crystal resonator
74 COMBINED WITH PARTICULAR OUTPUT COUPLING NETWORK
75 .Space discharge or unilaterally conductive device in output
network
76 ..Harmonic producing or selecting network
77 .Wave filter
78 ELECTRICAL NOISE OR RANDOM WAVE GENERATOR
79 BEAM TUBE
80 .With beam sweeping or deflecting means
81 .With electron bunching or velocity variation means
82 ..Traveling wave type
83 ..Multicavity type (e.g., Klystron)
84 ..Reflex type (i.e., with repeller electrode)
86 WITH MAGNETICALLY CONTROLLED SPACE DISCHARGE DEVICE (E.G.,
MAGNETRON)
87 .With particular pulsing means
88 .With frequency stabilization
89 .With secondary emissive electrode
90 .With frequency adjustment
91 .With undesired mode suppression or selection means
92 RETARDING FIELD TUBE-TYPE OSCILLATORS (E.G., BARKHAUSEN KURZ)
93 .With distributed parameter resonator
95 BUTTERFLY RESONATOR
96 WITH DISTRIBUTED PARAMETER RESONATOR
97 .Tube enclosed by resonator structure
98 ..Disk seal tube (e.g., lighthouse, pencil tube)
99 .Parallel wire type
100 ..Push-pull type
101 .Coaxial or shielded line typee
102 ..Push-pull type
103 TUBE STRUCTURE FORMS INDUCTIVE PART OF RESONANT CIRCUIT
104 TRANSIT TIME OSCILLATOR
105 WITH PARASITIC OSCILLATION CONTROL OR PREVENTION MEANS
106 WITH PERIODOIC OR REPETITIOUS AMPLITUDE VARYING MEANS (E.G.,
TREMOLO)
107 R SOLID STATE ACTIVE ELEMENT OSCILLATOR
108 R .Transistors
109 ..Amplitude stabilization and control
110 ..Bridge type
111 ..Relaxation oscillator
112 ...Blocking oscillator type
113 R ...Multivibrator type
113 A ....Saturable core controlled converters
113 S ....Converter using silicon control rectifiers
114 ..Push-pull
115 ..Negative resistance
116 R ..Electromechanical resonator controlled
116 FE ...Field-effect transistor active element
116 M ...Electromechanical resonators other than piezoelectric
crystals
117 R ..L-C type
117 FE ...Field-effect transistor active element
117 D ...Distributed parameter resonator transistor oscillators
108 A ..Use of complimentary-type transistors
108 B ..Phase shift oscillator
108 C ..Integrated circuit oscillators
108 D ..Integrated modules with discrete elements oscillators
107 DP .Significant distributed parameter resonator (e.g.,
cavity)
107 P ..Parallel-connected oscillator devices
107 SL ..Stripline type
107 C ..Coaxial type
107 A .Acoustoelectric device oscillators
107 G .Gunn-type bulk effect device oscillators
107 S .Superconductive device oscillators
107 T .Tunnel diode oscillators
126 GASEOUS SPACE DISCHARGE DEVICE
127 .Spark or open arc type
128 .Drives shock excited L.C. circuit
129 .Relaxation oscillator
130 ..Plural gaseous devices
131 ..Discharge device or rectifier in "C" or "L" charging or
discharging circuit
132 NEGATIVE RESISTANCE OR NEGATIVE TRANSCONDUCTANCE OSCILLATOR
133 .Secondary emission (e.g., dynatron)
134 .Transitron type
135 PHASE SHIFT TYPE
136 .Zero phase shift
137 .With R.C. ladder-type phase shift network
138 BRIDGE TYPE
139 .Piezoelectric crystal in bridge
140 .R.C. or R.L. type
141 ..Wien bridge
142 ..Double T bridge
143 RELAXATION OSCILLATORS
144 .Multivibrators
145 ..With sync, triggering or pulsing circuitt
146 .Blocking oscillators
147 ..Using discharge device with plural grids
148 ..With 3 or more winding feedback transformers
149 ..With sync, trigger, or pulsing circuit (e.g., self-pulsing)
150 .Output supplied to another discharge device circuit
151 .Involving resonant or inductive wave forming circuit or
transformer
152 .Multi-grid discharge device in charged capacitor circuit
153 .With sync, trigger or pulsing circuit
154 ELECTROMECHANICAL RESONATOR
155 .With optical, piezoelectric or acoustic coupling means
156 .Vibrating reed or string type (e.g., tuning fork)
157 .Magnetostrictive
158 .Crystal
159 ..Plural tube
160 ..With means to limit crystal current or voltage
161 ..With crystal substitution
162 ..Plural crystals in circuit
163 ..Crystal having three or more electrodes in circuit
164 ..Anode or cathode to grid crystal circuit
165 SHOCK EXCITED RESONANT CIRCUIT
166 .With keying means of the active element type (e.g., burst
generator)
167 L-C TYPE OSCILLATORS
168 .Plural tubes
169 .Anode to cathode coupled or connected resonant circuit
170 .Anode to grid coupled or connected resonant circuit
171 .Grid to cathode coupled or connected resonant circuit
172 WITH SYNCHRONIZING, TRIGGERING OR PULSING CIRCUITS
173 .Triggering or pulsing (e.g., burst generators)
174 ..Self-quenched
175 FREQUENCY STABILIZATION
176 .Temperature or current responsive means in circuit
177 R WITH FREQUENCY ADJUSTING MEANS
178 .Cyclic frequency sweeping means (e.g., vibrato)
179 .Step-frequency change (e.g., band selection, frequency-shift
keying)
180 .Reactance tube type
181 .Variable inductance device (e.g., saturable core or adjustable
vane inductor)
177 V .With voltage sensitive capacitor
182 AMPLITUDE CONTROL OR STABILIZATION
183 .Automatic
184 HAVING DISCHARGED DEVICE OR PARTICULAR CONSTRUCTION
185 WITH PARTICULAR SOURCE OF POWER OR BIAS VOLTAGE
186 .Regulated
187 MISCELLANEOUS OSCILLATOR STRUCTURES
* ******************************
* DIGESTS
* ******************************
DIG 2 Phase locked loop having lock indicating or detecting
means
DIG 3 Logic gate active element oscillator