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363-131 121-55A 14-.5
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Class Number: 367
Class Title: COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND
DEVICES
Subclass Subclass
Number Title
1 SONAR COUNTER-MEASURES
2 TRANSPONDERS
3 .Sonobuoys and sonobuoy systems
4 ..With component activating or deployment means
5 ..With plurality of sonobuoys
6 .With plurality of transponders
7 ACOUSTIC IMAGE CONVERSION
8 .Acoustic holography
9 ..Seismic display
10 ..Liquid or deformable surface holography
11 .With memory means
12 BEAM STABILIZATION OR COMPENSATION
13 TESTING, MONITORING, OR CALIBRATING
14 SEISMIC PROSPECTING
15 .Offshore prospecting
16 ..Transducer position control
17 ...Hydromechanical
18 ...Fluid variation
19 ..Transducer cable location determination
20 ..Multiple hydrophone cable systems
21 ..Signal processing
22 ...Transducer output weighting
23 ...Controlled source signalling
24 ...Reverberation removal
25 .Well logging
26 ..Threshold set system
27 ..Time interval measurement
28 ..Amplitude measurement
29 ...Peak amplitude
30 ...Amplitude comparison
31 ...Of noncompressional acoustic wave energy
32 ...Frequency dependent determination
33 ..Depth recording or control
34 ..Received signal cycle discrimination
35 ..Borehole or casing condition
36 .Land-refraction type
37 .Land-reflection type
38 ..Signal analysis and/or correction
39 ...Random signal correlation
40 ...Received correlation
41 ...Transmitted correlation
42 ...Standard correlation
43 ...Filters
44 ....Comb filters
45 ....Adaptive filters
46 ....Inverse filters
47 ...Amplitude
48 ...Phase
49 ...Frequency
50 ...Timing correction
51 ....Dynamic timing correctionn
52 .....Normal moveout
53 ....For dip
54 ....For weathering layer
55 ...Timing mark generation
56 ...Particular source-receiver array
57 ....Vertical receiver or source array
58 ...By receiver pattern arrangement
59 ...Compositing system
60 ....Special digital system
61 ....Beam steering
62 ....Array weighting
63 ....With preliminary signal processing
64 ...Optical processing
65 ...Gain control
66 ....Analog/digital compatible systems
67 ....Digital
68 ..Display systems
69 ...Well logging type
70 ...Color
71 ...CRT
72 ...3-D
73 ..Synthetic seismograms and models
74 ..Format conversion
75 ..Shear wave
76 ..Telemetry
77 ...Radio wave
78 ...Multiplex
79 ....Time
80 ....Frequency
81 WELLBORE TELEMETERING
82 .Through drill string or casing
83 .Through well fluids
84 ..Rotary valve control
85 ..Linear valve control
86 BOREHOLE TESTING
87 ECHO SYSTEMS
88 .Side scanning or contour mapping sonar systems
89 .Speed determination
90 ..By doppler effect
91 ...Vehicle mounted system for determining vehicle speed
92 .Parametric sonar
93 .Presence or movement only detection
94 ..By doppler effect
95 .Returned signal used for control
96 ..External device
97 ..Receiver system
98 ...Automatic gain or threshold control
99 .Distance or direction finding
100 ..With correlation or matched filtering
101 ..Frequency modulation
102 ...Linear modulation (e.g., sawtooth)
103 ..With beam steering, scanning, or focussing
104 ...By transducer movement
105 ...Transducer switching or gating
106 ..With towing
107 ..With indicator
108 ...Digital readout
109 ...Rotating lampp
110 ...Color display
111 ...Luminous array
112 ...Alarm
113 ...Cathode-ray tube
114 ...Meter
115 ...Permanent record
116 ...Audible or tactile
117 PLURAL TRANSMITTERS TO RECEIVER OR TRANSMITTER TO PLURAL
RECEIVERS
197 SELECTIVE (E.G., REMOTE CONTROL)
198 .Humanly generated sound or speech responsive (e.g., human
whistle)
199 .Frequency responsive actuation
118 DISTANCE OR DIRECTION FINDING
119 .With beam steering, scanning, or focussing
120 ..By transducer movement
121 ..By electrical means
122 ...Transducer switching or gating
123 ...With phase shifter or delay means
124 .By combining or comparing signals
125 ..Phase comparison and/or correlation
126 ..Addition or subtraction
127 .With time interval measuring means
128 .With electromagnetic wave
129 .With plurality of transducers
130 .With towing
131 UNDERWATER SYSTEM
132 .Analog speech communication
133 .Remote control
134 .Telemetering
135 RECEIVER CIRCUITRY
136 .Responsive to intruder energy
137 TRANSMITTER SYSTEMS
138 .With beam forming, shaping, steering, or scanning
139 .Animal control
140 SIGNAL TRANSDUCERS
141 .Underwater type
142 ..Exclusive-type transmitter
143 ...Hydraulically driven vibrator
144 ...Air guns
145 ...Explosives
146 ...Implosion devices
147 ...Spark discharge devices
148 ...Electrically driven underwater bells or sirens
149 ..Exclusive-type receiver
150 ..With modifying lens
151 ..With reflector
152 ..With impedance matching means
153 ..Plural transducer array
154 ...Line array
155 ...Piezoelectric
156 ...Magnetostrictive
157 ..Piezoelectric
158 ...Head and tail mass
159 ...Elongated cylindrical element
160 ...Bending type
161 ....Multimorph
162 ...With resonant or damping structuree
163 ...With diaphragm
164 ...Single element having a plurality of electrodes
165 ...Specific support structure
166 ...Liquid filled
167 ...Pressure compensating means
168 ..Magnetostrictive
169 ..Elongated continuous type
170 ..Electret
171 ..Liquid filled transducer
172 ..Transducer with pressure compensating means
173 ..Transducer with support
174 ..Transducer with diaphragm
175 ...Diaphragm with electric driving coil
176 ..Transducer with resonant or damping structure
177 .Towed land cables
178 .Receivers
179 ..Pendulum type
180 ..Piezoelectric
181 ..Capacitive
182 ..Moving coil
183 ...Spider spring
184 ...Having arcuate movement
185 ..Moving magnet
186 ...Having arcuate movement
187 ...Spider spring
188 ..Casing or housing
189 .Vibrator-type transmitter
190 ..With feedback control
191 MISCELLANEOUS
* ******************************
* CROSS-REFERENCE ART COLLECTIONS
* ******************************
900 SONAR TIME VARIED GAIN CONTROL SYSTEMS
901 NOISE OR UNWANTED SIGNAL REDUCTION IN NONSEISMIC RECEIVING
SYSTEM
902 SPEED OF SOUND COMPENSATION
903 TRANSMIT-RECEIVE CIRCUITRY
904 DOPPLER COMPENSATION SYSTEMS
905 SIDE LOBE REDUCTION OR SHADING
906 AIRBORNE SHOCK-WAVE DETECTION
907 COORDINATE DETERMINATION
908 MATERIAL LEVEL DETECTION, E.G., LIQUID LEVEL
909 COLLISION AVOIDANCE
910 PORTABLE SONAR DEVICES
911 PARTICULAR WELL-LOGGING APPARATUS
912 .Particular transducer