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

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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, CT3966

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cullen, Donald E Manchester, CT 13 218

Cited Art Landscape

Patent Info (Count) # Cites Year
 
THOMSON-CSF (2)
* 4,306,456 Elastic wave accelerometer 31 1980
* 4,515,016 Elastic surface wave accelerometers 9 1983
 
UNITED TECHNOLOGIES CORPORATION (1)
* 4,333,342 Fluid damped saw accelerometer 13 1980
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
NEC TOKIN CORPORATION (1)
* 2007/0119,257 Vibration detection method and system, battery-less vibration sensor and interrogator therefor 4 2006
 
FREESCALE SEMICONDUCTOR, INC. (1)
* 5,209,117 Tapered cantilever beam for sensors 34 1990
 
CORNELL UNIVERSITY (1)
8,860,553 Self-powered, piezo-surface acoustic wave apparatus and method 0 2009
 
HONEYWELL INTERNATIONAL INC. (4)
* 6,553,836 Surface acoustic wave (SAW) accelerometer 8 2001
* 2007/0079,656 Micro-machined acoustic wave accelerometer 4 2005
* 7,380,454 Load beam for surface acoustic wave accelerometer 2 2005
* 2007/0137,300 Load beam for surface acoustic wave accelerometer 2 2005
 
MURATA MANUFACTURING CO., LTD. (3)
* 5,438,859 Acceleration sensor having fault diagnosing device 7 1992
* 5,517,845 Acceleration sensor having fault diagnosing device 12 1995
* 6,046,656 Elastic boundary wave device and method of its manufacture 29 1999
 
FUJITSU MEDIA DEVICES LIMITED (2)
6,796,181 Acceleration sensor 2 2002
* 2005/0016,274 Acceleration sensor 0 2004
 
ALLIEDSIGNAL INC. (3)
6,745,627 Electrostatic drive for accelerometer 10 1996
* 5,948,981 Vibrating beam accelerometer 31 1996
* 5,948,982 Vibrating beam accelerometers and methods of forming vibrating beam accelerometers 13 1998
 
AEROJET ROCKETDYNE OF DE, INC. (1)
7,689,385 Method of animating structural vibration under operational conditions 1 2007
 
SONY INTERACTIVE ENTERTAINMENT AMERICA LLC (1)
* 2006/0080,415 Methods and apparatuses for automatically synchronizing a profile across multiple devices 32 2004
 
ROCKWELL INTERNATIONAL CORPORATION (1)
* 4,803,883 Accelerometer 5 1987
 
INNERSPEC TECHNOLOGIES (1)
* 2011/0296,922 EMAT FOR INSPECTING THICK-SECTION WELDS AND WELD OVERLAYS DURING THE WELDING PROCESS 0 2010
 
The United States of America as represented by the Secretary of the Army (1)
* 7,298,067 Damped package for piezoelectric devices 3 2006
 
MINERAL LASSEN LLC (1)
* 6,744,367 Identification tag 29 2002
 
TEMIC TELEFUNKEN MICROELECTRONIC GMBH (1)
* 5,684,456 Tilt-sensor 8 1996
* Cited By Examiner