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Class Information
Number: 367/147
Name: Communications, electrical: acoustic wave systems and devices > Signal transducers > Underwater type > Exclusive-type transmitter > Spark discharge devices
Description: Subject matter wherein underwater transducer produces an electric spark in the surrounding water which creates an acoustic shock wave.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8619503 Sparker type wellbore seismic energy source having controllable depth independent frequency Dec. 31, 2013
8259534 Generator device for marine geophysical research Sep. 4, 2012
8088073 Device for the application of acoustic shock waves Jan. 3, 2012
7505365 Lorentz acoustic transmitter for underwater communications Mar. 17, 2009
7352653 High-resolution and high-power ultrasound method and device, for submarine exploration Apr. 1, 2008
7311678 Pressure-pulse therapy apparatus Dec. 25, 2007
7267654 Focused shock-wave devices with direct wave cavitation suppressor Sep. 11, 2007
7251195 Apparatus for generating an acoustic signal Jul. 31, 2007
7245560 Acoustic source for infrasonic electromagnetic wave exploration using induced electrokinetic effect Jul. 17, 2007
7028807 Non-explosive acoustic source Apr. 18, 2006
6755796 Pressure-pulse therapy apparatus Jun. 29, 2004
6687189 High efficiency long lifetime sparker sources Feb. 3, 2004
6666834 Method and apparatus for generating shock waves Dec. 23, 2003
6366535 Apparatus for generating ultrasonic fields Apr. 2, 2002
6217531 Adjustable electrode and related method Apr. 17, 2001
6215734 Electrohydraulic pressure wave projectors Apr. 10, 2001
6186963 Device for generating acoustic shock waves, especially for medical applications Feb. 13, 2001
6113560 Method and device for generating shock waves for medical therapy, particularly for electro-hydraulic lithotripsy Sep. 5, 2000
6080119 Process and device for generating shock waves for medical uses Jun. 27, 2000
6018502 Long life coaxial sparker for underwater sound source Jan. 25, 2000
5992559 Reversible polarity borehole seismic device for P and enhanced S-wave crosshole testing Nov. 30, 1999
5995452 System for generating and transmitting acoustic signals underwater Nov. 30, 1999
5903518 Multiple plasma channel high output variable electro-acoustic pulse source May. 11, 1999
5889209 Method and apparatus for preventing biofouling of aquatic sensors Mar. 30, 1999
5841737 Sparker source systems Nov. 24, 1998
5748563 Energy converter for generating high-power pulses May. 5, 1998
5636180 System for preventing biofouling of surfaces exposed to water Jun. 3, 1997
5529572 Method and apparatus particularly useful for treating osteoporosis Jun. 25, 1996
5458652 Device for generating shock waves for non contact disintegration of calculi Oct. 17, 1995
5432756 Zebra mussel (Dreissena polymorpha) and other aquatic organism control Jul. 11, 1995
5408049 Multiple-phase electrical system Apr. 18, 1995
5398217 Method of high-resolution sea bottom prospecting and tuned array of paraboloidal, electroacoustic transducers to carry out such method Mar. 14, 1995
5331952 Water system for lithotripter Jul. 26, 1994
5305287 High-frequency borehole seismic source Apr. 19, 1994
5301169 Seismic source Apr. 5, 1994
5259368 Apparatus for comminuting concretions in the body of a patient Nov. 9, 1993
5245988 Preparing a circuit for the production of shockwaves Sep. 21, 1993
5239985 Electrode to destroy renal stones Aug. 31, 1993
5231976 Apparatus for triggering shock waves Aug. 3, 1993
5228011 Variable multi-stage arc discharge acoustic pulse source transducer Jul. 13, 1993
5208788 Discharge circuit, and use thereof in a method and in apparatus for detecting and correcting the positions of electrodes, in particular as used in apparatuses for generating pressure waves May. 4, 1993
5195508 Spark gap unit for lithotripsy Mar. 23, 1993
5146912 Variable energy shock wave production Sep. 15, 1992
5105801 Method and apparatus for improving the reproducibility and efficiency of the pressure waves generated by a shock wave generating apparatus Apr. 21, 1992
4962753 A method and device for improving the discharge regime between two electrodes Oct. 16, 1990
4868791 Method and apparatus for detecting and correcting the positions of electrodes, in particular in shock wave generator apparatus using a feeler finger, e.g. the rod of an actuator, movable to th Sep. 19, 1989
4764906 Plasma jet underwater acoustic source Aug. 16, 1988
4734894 Electroacoustic pulse source for high resolution seismic prospectings Mar. 29, 1988
4715376 Isolation of gas in hydraulic spark gap shock wave generator Dec. 29, 1987
4715375 Degassification of water in hydraulic spark gap shock wave generator Dec. 29, 1987

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