US Patent No: 4,676,104

Number of patents in Portfolio can not be more than 2000

Surface skimming bulk acoustic wave accelerometer

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Abstract

An accelerometer includes a cantilevered pieozelectric beam mounted to a surface inside a fluid filled chassis with a proof mass attached to the beam's free end. Surface skimming bulk wave delay lines are mounted on opposing major surfaces of the beam and are responsive to strain induced therein by acceleration of the proof mass.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
UNITED TECHNOLOGIES CORPORATIONHARTFORD, CT5429

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cullen, Donald E Manchester, CT 13 206

Cited Art

Patent Info (Count) # Cites Year
 
THOMSON-CSF (2)
4,306,456 Elastic wave accelerometer 26 1980
4,515,016 Elastic surface wave accelerometers 9 1983
 
UNITED TECHNOLOGIES CORPORATION (1)
4,333,342 Fluid damped saw accelerometer 13 1980

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
ALLIEDSIGNAL INC. (3)
6,745,627 Electrostatic drive for accelerometer 3 1996
5,948,981 Vibrating beam accelerometer 27 1996
5,948,982 Vibrating beam accelerometers and methods of forming vibrating beam accelerometers 10 1998
 
HONEYWELL INTERNATIONAL INC. (2)
6,553,836 Surface acoustic wave (SAW) accelerometer 7 2001
7,380,454 Load beam for surface acoustic wave accelerometer 1 2005
 
MURATA MANUFACTURING CO., LTD. (2)
5,438,859 Acceleration sensor having fault diagnosing device 7 1992
5,517,845 Acceleration sensor having fault diagnosing device 10 1995
 
FREESCALE SEMICONDUCTOR, INC. (1)
5,209,117 Tapered cantilever beam for sensors 23 1990
 
FUJITSU MEDIA DEVICES LIMITED (1)
6,796,181 Acceleration sensor 2 2002
 
KABUSHIKI KAISHA TOSHIBA (1)
6,046,656 Elastic boundary wave device and method of its manufacture 27 1999
 
MINERAL LASSEN LLC (1)
6,744,367 Identification tag 23 2002
 
PRATT & WHITNEY ROCKETDYNE, INC. (1)
7,689,385 Method of animating structural vibration under operational conditions 1 2007
 
ROCKWELL INTERNATIONAL CORPORATION (1)
4,803,883 Accelerometer 5 1987
 
TEMIC TELEFUNKEN MICROELECTRONIC GMBH (1)
5,684,456 Tilt-sensor 8 1996
 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY (1)
7,298,067 Damped package for piezoelectric devices 2 2006