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Class Information
Number: 367/163
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Underwater type > Piezoelectric > With diaphragm
Description: Subject matter having a flexible member which couples vibrations in an acoustic medium to or from the piezoelectric element.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8135149 Wireless communication device Mar. 13, 2012
7793404 Resonant-oscillating-device fabrication method Sep. 14, 2010
7772746 Thermacoustic piezoelectric generator Aug. 10, 2010
7719926 Slotted cylinder acoustic transducer May. 18, 2010
7545012 Capacitive micromachined ultrasound transducer fabricated with epitaxial silicon membrane Jun. 9, 2009
7535801 Multiple frequency sonar transducer May. 19, 2009
7530952 Capacitive ultrasonic transducers with isolation posts May. 12, 2009
7457199 Shear mode folded shell projector Nov. 25, 2008
7453772 Flexural cylinder projector Nov. 18, 2008
7408283 Micromachined ultrasonic transducer cells having compliant support structure Aug. 5, 2008
7345953 Flextensional vibration sensor Mar. 18, 2008
7292503 Multi piston electro-mechanical transduction apparatus Nov. 6, 2007
7205704 Valve control device Apr. 17, 2007
7038355 Tunable microresonator on an insulating beam deformable by the difference in thermal expansion coefficients May. 2, 2006
7030536 Micromachined ultrasonic transducer cells having compliant support structure Apr. 18, 2006
7019439 High power ultrasonic transducer with broadband frequency characteristics at all overtones and harmonics Mar. 28, 2006
6987445 Water resistant audible signal Jan. 17, 2006
6865140 Mosaic arrays using micromachined ultrasound transducers Mar. 8, 2005
6829198 Electroacoustic transducer having compression screw mechanical bias Dec. 7, 2004
6784600 Ultrasonic membrane transducer for an ultrasonic diagnostic probe Aug. 31, 2004
6714484 Microfabricated acoustic transducer with suppressed substrate modes Mar. 30, 2004
6678213 Slotted cylinder transducer with trapezoidal cross-sectional electrodes Jan. 13, 2004
6643222 Wave flextensional shell configuration Nov. 4, 2003
6535459 Barrel stave projector-stave attachment Mar. 18, 2003
6504795 Arrangement of micromechanical ultrasound transducers Jan. 7, 2003
6383152 Apparatus for producing shock waves for technical, preferably medical applications May. 7, 2002
6356511 Low distortion ratio hydrophone Mar. 12, 2002
6304516 Transducer shell assembly for a bimodal transducer Oct. 16, 2001
6298012 Doubly resonant push-pull flextensional Oct. 2, 2001
6188313 Device for generating sound Feb. 13, 2001
6160762 Optical sensor Dec. 12, 2000
6049511 High sensitivity fiber optic hydrophone Apr. 11, 2000
6002649 Tapered cylinder electro-acoustic transducer with reversed tapered driver Dec. 14, 1999
5956292 Monolithic micromachined piezoelectric acoustic transducer and transducer array and method of making same Sep. 21, 1999
5894452 Microfabricated ultrasonic immersion transducer Apr. 13, 1999
5883857 Non-liquid filled streamer cable with a novel hydrophone Mar. 16, 1999
5875154 Barrel stave flextensional projector Feb. 23, 1999
5870351 Broadband microfabriated ultrasonic transducer and method of fabrication Feb. 9, 1999
5856956 Piezoelectric acoustic transducer Jan. 5, 1999
5835453 Electrostrictive acoustic projector and polymers used therein Nov. 10, 1998
5805529 Folded shell projector (FSP) Sep. 8, 1998
5757728 Acoustic transmitter May. 26, 1998
5757726 Flextensional acoustic source for offshore seismic exploration May. 26, 1998
5755136 Device for monitoring a predetermined level of a liquid in a container May. 26, 1998
5748567 Acceleration sensor May. 5, 1998
5742561 Transversely driven piston transducer Apr. 21, 1998
5730025 Device for monitoring a predetermined level of a liquid in a container Mar. 24, 1998
5726952 Sound or ultrasound sensor Mar. 10, 1998
5706254 Surface element and a device for generating sound Jan. 6, 1998
5701277 Electro-acoustic transducers Dec. 23, 1997

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