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Class Information
Number: 367/159
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Underwater type > Piezoelectric > Elongated cylindrical element
Description: Subject matter wherein piezoelectric matrial is in the shape of an elongated cylinder.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8194504 Hydrophone unit Jun. 5, 2012
7894307 Acoustic projector having minimized mechanical stresses Feb. 22, 2011
7719926 Slotted cylinder acoustic transducer May. 18, 2010
7609586 Acoustic projector having minimized mechanical stresses Oct. 27, 2009
7483339 Acoustic projector and method of manufacture Jan. 27, 2009
7372777 Sonic instrumentation apparatus and method for cement bond logging May. 13, 2008
7069795 Sensor using electro active curved helix and double helix Jul. 4, 2006
6951138 Method and apparatus for an ocean bottom seismic acquisition technique Oct. 4, 2005
6915875 Acoustic isolator for downhole applications Jul. 12, 2005
6873572 Low-frequency sonar countermeasure Mar. 29, 2005
6739423 Acoustic logging tool May. 25, 2004
6552961 Seismic source sensor Apr. 22, 2003
6512980 Noise reference sensor for use in a dual sensor towed streamer Jan. 28, 2003
6337835 Electromechanical converter and method of producing same Jan. 8, 2002
6285631 Slotted cylinder transducer with sealing boot and method of making same Sep. 4, 2001
6278658 Self biased transducer assembly and high voltage drive circuit Aug. 21, 2001
RE37204 Transducer assembly Jun. 5, 2001
6109109 High energy, low frequency, ultrasonic transducer Aug. 29, 2000
6076629 Low frequency flextensional acoustic source for underwater use Jun. 20, 2000
6069845 Composite marine seismic source May. 30, 2000
6041888 Low frequency flextensional acoustic source for underwater use Mar. 28, 2000
6002648 Slotted cylinder marine siesmic method and source Dec. 14, 1999
5796676 Hydrophone module for a marine seismic cable Aug. 18, 1998
5784341 Underwater acoustic transmitter for large submersion Jul. 21, 1998
5781509 Wide beam array with sharp cutoff Jul. 14, 1998
5742559 Hydrophone and array thereof Apr. 21, 1998
5726952 Sound or ultrasound sensor Mar. 10, 1998
5658534 Sonochemical apparatus Aug. 19, 1997
5579287 Process and transducer for emitting wide band and low frequency acoustic waves in unlimited immersion depths Nov. 26, 1996
5550791 Composite hydrophone array assembly and shading Aug. 27, 1996
5546361 Directional electro-acoustic transducers comprising a sealed sell consisting of two portions Aug. 13, 1996
5508976 Low frequency underwater acoustic transducer Apr. 16, 1996
5483502 Method and apparatus for emitting high power acoustic waves using transducers Jan. 9, 1996
5477101 Downhole acoustic transducer Dec. 19, 1995
5412621 Encapsulated hydrophone element for towed hydrophone array May. 2, 1995
5406531 Low frequency flex-beam underwater acoustic transducer Apr. 11, 1995
5363346 Conforming tuning coupler for flextensional transducers Nov. 8, 1994
5361240 Acoustic sensor Nov. 1, 1994
5357486 Acoustic transducer Oct. 18, 1994
5321333 Torsional shear wave transducer Jun. 14, 1994
H1308 Narrow band acoustic source May. 3, 1994
5291461 Elastomer structure for transducers Mar. 1, 1994
5276657 Metal-electroactive ceramic composite actuators Jan. 4, 1994
5267223 Electroacoustic transducer seal Nov. 30, 1993
5237543 Moment bender transducer drive Aug. 17, 1993
5229980 Broadband electroacoustic transducer Jul. 20, 1993
5229978 Electro-acoustic transducers Jul. 20, 1993
5220538 Electro-acoustic transducer insulation structure Jun. 15, 1993
5204843 Integrated reception system of great length for sensing acoustic waves Apr. 20, 1993
5199004 Sealed acoustical element using conductive epoxy Mar. 30, 1993

1 2 3










 
 
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