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Class Information
Number: 367/143
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Underwater type > Exclusive-type transmitter > Hydraulically driven vibrator
Description: Subject matter wherein reactive masses are oscillated by fluid pressure.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8687464 Marine siren seismic source Apr. 1, 2014
8634276 Tunable bubble sound source Jan. 21, 2014
8630149 Marine seismic source Jan. 14, 2014
8570835 Marine vibratory sound source for beneath water seismic exploration Oct. 29, 2013
8520471 Towed acoustic source Aug. 27, 2013
8488414 Acoustic line source Jul. 16, 2013
8441892 Gas-filled bubble seismo-acoustic source May. 14, 2013
8353383 Water motion powered seismic energy source and method for seismic surveying therewith Jan. 15, 2013
7136324 Pressure equalizing fluidborne sound projector Nov. 14, 2006
7130246 Acoustic fluid machine Oct. 31, 2006
6751161 Fluidborne sound projector with sweep cleaning facilities Jun. 15, 2004
6464035 Streamlined, readily towable marine seismic energy source for creating intense swept-frequency and pulse-coded signals in a body of water Oct. 15, 2002
6320821 Fluidborne sound projector Nov. 20, 2001
6173803 High amplitude sound wave generator Jan. 16, 2001
6148952 Hydraulic slotted cylinder source Nov. 21, 2000
5894451 Impulsive snap-through acoustic pulse generator Apr. 13, 1999
5467322 Water hammer driven vibrator Nov. 14, 1995
5459699 Method and apparatus for generating high energy acoustic pulses Oct. 17, 1995
5375100 Gas-operated apparatus for making a noise under water Dec. 20, 1994
5319610 Hydraulic acoustic wave generator system for drillstrings Jun. 7, 1994
5128906 Deep penetrating shear-wave seismic vibratory source for use in marine environments Jul. 7, 1992
5128900 Multi-component seismic vibratory source for use in marine environments Jul. 7, 1992
5115880 Piezoelectric seismic vibrator with hydraulic amplifier May. 26, 1992
5117402 Support stand for marine vibrator May. 26, 1992
4885726 Compound hydraulic seismic source vibrator Dec. 5, 1989
4881211 Multiple frequency range hydraulic actuator Nov. 14, 1989
4853905 Seal for marine seismic source Aug. 1, 1989
4815557 Down hole seismographic source Mar. 28, 1989
4797862 Seismic generator Jan. 10, 1989
4751687 Methods of reducing harmonic distortion in continuous wave seismic exploration Jun. 14, 1988
4730692 Apparatus for marine shear wave prospecting Mar. 15, 1988
4695987 Hydroacoustic apparatus Sep. 22, 1987
4648478 Device for generating sound pulses inside a well, by percussion Mar. 10, 1987
4641725 Wide dynamic range hydraulic vibrator Feb. 10, 1987
4635747 Marine seismic vibrator having support structure including vibration isolators Jan. 13, 1987
4633970 Distributed marine seismic source Jan. 6, 1987
4578784 Tunable marine seismic source Mar. 25, 1986
4556963 Underwater sound generator Dec. 3, 1985
4483411 Tunable marine seismic source Nov. 20, 1984
4396088 Flexible marine seismic source Aug. 2, 1983
4334592 Sea water hydraulic fluid system for an underground vibrator Jun. 15, 1982
4211301 Marine seismic transducer Jul. 8, 1980
4203089 Electro-hydroacoustic transducer May. 13, 1980
4153135 Apparatus for the generation of acoustic signals in marine environments May. 8, 1979
4142171 Efficient apparatus for projecting acoustic waves Feb. 27, 1979
4103280 Device for emitting acoustic waves in a liquid medium Jul. 25, 1978
4047591 Air gun monitoring and synchronizing method and apparatus Sep. 13, 1977
4047148 Piston type underwater sound generator Sep. 6, 1977
4034827 Air gun utilizing magnetized shuttle Jul. 12, 1977
4030063 Ultra low frequency acoustic generator Jun. 14, 1977

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