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Class Information
Number: 367/160
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Underwater type > Piezoelectric > Bending type
Description: Subject matter wherein the mechanical stresses applied to or produced in the piezoelectric element include a coplanar pair or oppositely directed moments of mechanical force.










Sub-classes under this class:

Class Number Class Name Patents
367/161 Multimorph 14


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8206305 Multi-twisted acoustic array for medical ultrasound Jun. 26, 2012
8020266 Method of producing a device Sep. 20, 2011
7847469 Micro-cantilever Dec. 7, 2010
7301690 Micro-optical arrangement Nov. 27, 2007
7180225 Piezoelectric vibrator Feb. 20, 2007
7069795 Sensor using electro active curved helix and double helix Jul. 4, 2006
6784600 Ultrasonic membrane transducer for an ultrasonic diagnostic probe Aug. 31, 2004
6693849 Piezoelectric audio transducer Feb. 17, 2004
6495642 Process for preparing electrostrictive polymers and resulting polymers and articles Dec. 17, 2002
6278658 Self biased transducer assembly and high voltage drive circuit Aug. 21, 2001
6160763 Towed array hydrophone Dec. 12, 2000
6076629 Low frequency flextensional acoustic source for underwater use Jun. 20, 2000
6041888 Low frequency flextensional acoustic source for underwater use Mar. 28, 2000
6002649 Tapered cylinder electro-acoustic transducer with reversed tapered driver Dec. 14, 1999
5889731 Vibration detector Mar. 30, 1999
5856956 Piezoelectric acoustic transducer Jan. 5, 1999
5852589 Low cost composite transducer Dec. 22, 1998
5815466 Hydrophone structure with reverse bend of piezoelectric element Sep. 29, 1998
5677894 Hydrophone structure with center pin Oct. 14, 1997
5572487 High pressure, high frequency reciprocal transducer Nov. 5, 1996
5406531 Low frequency flex-beam underwater acoustic transducer Apr. 11, 1995
5197041 Piezoelectric mud pulser for measurement-while-drilling applications Mar. 23, 1993
5191559 Piezoelectric ceramic hydrostatic sound sensor Mar. 2, 1993
5153859 Laminated piezoelectric structure and process of forming the same Oct. 6, 1992
5136549 Marine hydrophone Aug. 4, 1992
5099461 Underwater electroacoustic transducers Mar. 24, 1992
5033032 Air-gap hydrophone Jul. 16, 1991
5001681 Monolaminar piezoelectric bender bar Mar. 19, 1991
4995014 Low frequency hydrophone and depth sensor assembly Feb. 19, 1991
4810913 Increased sensitivity piezoelectric hydrophones Mar. 7, 1989
4782910 Bi-polar bender transducer for logging tools Nov. 8, 1988
4779246 Electro-acoustic transducer Oct. 18, 1988
4754441 Directional flextensional transducer Jun. 28, 1988
4742495 Acoustic energy transmitter for borehole logging May. 3, 1988
4725994 Ultrasonic transducer with a multiple-folded piezoelectric polymer film Feb. 16, 1988
4709361 Flexural disk transducer Nov. 24, 1987
4694440 Underwater acoustic wave transmitting and receiving unit Sep. 15, 1987
4679178 Arrangement in hydrophone Jul. 7, 1987
4536862 Seismic cable assembly having improved transducers Aug. 20, 1985
4516228 Acoustic well logging device for detecting compressional and shear waves May. 7, 1985
4435794 Wall-driven oval ring transducer Mar. 6, 1984
4326275 Directional transducer Apr. 20, 1982
4287582 Piezo transducers with mechanical amplification for very low frequencies, and acoustic antennas Sep. 1, 1981
4188612 Piezoelectric seismometer Feb. 12, 1980
4184093 Piezoelectric polymer rectangular flexural plate hydrophone Jan. 15, 1980
4163206 Apparatus and method for seismic wave detection Jul. 31, 1979
4131874 Inertial balanced dipole hydrophone Dec. 26, 1978
4081786 Hydrophone having a directive lobe in the form of a cardioid Mar. 28, 1978
4075600 Dual resonance bender transducer Feb. 21, 1978
4031502 Hydrophone with acoustic reflector Jun. 21, 1977

1 2










 
 
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