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Class Information
Number: 367/171
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Underwater type > Liquid filled transducer
Description: Subject matter wherein the transducer is filled with an acoustically transparent liquid.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8644115 Hydrophone and pressure balancing device for using for hydrophone Feb. 4, 2014
8555483 Method of manufacturing a vibrating element Oct. 15, 2013
8325564 Osmotic pressure based cavitation suppression system Dec. 4, 2012
8256093 Method of manufacturing an acoustic mirror Sep. 4, 2012
8094519 Intensity modulated fiber optic hydrophones Jan. 10, 2012
7971337 Method for producing a microphone module for a hearing aid device Jul. 5, 2011
7926163 Method of producing an oscillator device Apr. 19, 2011
7905006 Method of manufacturing faceplate for in-the-ear hearing aid Mar. 15, 2011
7669310 Method of manufacturing an acoustic mirror Mar. 2, 2010
7412763 Method of making an acoustic assembly for a transducer Aug. 19, 2008
7393331 Vortex bubble-removing and cooling system for the electromagnetic shock wave generator for the lithotripter Jul. 1, 2008
7376048 Underwater sound projector and underwater sound projection method May. 20, 2008
7311677 Energy concentrator system and method Dec. 25, 2007
7311678 Pressure-pulse therapy apparatus Dec. 25, 2007
7266046 Miniature low frequency acoustic transmitter Sep. 4, 2007
7239577 Apparatus and methods for multicomponent marine geophysical data gathering Jul. 3, 2007
7204009 Manufacturing method of acoustic sensor Apr. 17, 2007
7080442 Manufacturing method of acoustic sensor Jul. 25, 2006
7028807 Non-explosive acoustic source Apr. 18, 2006
6928720 Method of manufacturing a surface acoustic wave device Aug. 16, 2005
6873572 Low-frequency sonar countermeasure Mar. 29, 2005
6814180 Monopole-driven underwater sound source Nov. 9, 2004
6755796 Pressure-pulse therapy apparatus Jun. 29, 2004
6751162 Seismic sensor Jun. 15, 2004
6584038 Device for receiving seismic waves and method for coupling them with a solid environment Jun. 24, 2003
6275448 Pressure-compensated acceleration-insensitive hydrophone Aug. 14, 2001
6173803 High amplitude sound wave generator Jan. 16, 2001
6172940 Two geophone underwater acoustic intensity probe Jan. 9, 2001
5889731 Vibration detector Mar. 30, 1999
5555221 Device for picking up sound waves propagating in water Sep. 10, 1996
5531119 Ultrasound probe with bubble trap Jul. 2, 1996
5469406 Method of emitting very low frequency high power acoustic waves, and corresponding transducers therefor Nov. 21, 1995
5355351 Underwater low-frequency sound producer using a rare earth alloy Oct. 11, 1994
5279282 Acoustic wave generator having a circulatable, liquid acoustic propagation medium Jan. 18, 1994
5270985 Seismic pulse generation Dec. 14, 1993
5218576 Underwater transducer Jun. 8, 1993
5206839 Underwater sound source Apr. 27, 1993
5200932 Underwater audible signalling device Apr. 6, 1993
5126980 Self-orienting vertically sensitive accelerometer Jun. 30, 1992
5111805 Piezoelectric transducer May. 12, 1992
5068836 Sound generating transducer Nov. 26, 1991
5062089 Sonar projector with liquid mass loading for operation at lower frequency Oct. 29, 1991
5047996 Sonar transducer Sep. 10, 1991
5046056 Self-orienting vertically sensitive accelerometer Sep. 3, 1991
5003285 Transducer array Mar. 26, 1991
4996675 Signal sensor insensitive to static pressure variations Feb. 26, 1991
4991153 Vibration type transducer Feb. 5, 1991
4918666 Tubular piezo-electric sensor with high sensitivity Apr. 17, 1990
4890687 Borehole acoustic transmitter Jan. 2, 1990
4821838 Acoustic damper Apr. 18, 1989

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