Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy
Class Information
Number: 310/339
Name: Electrical generator or motor structure > Non-dynamoelectric > Piezoelectric elements and devices > With mechanical energy coupling means > Voltage, spark or current generator
Description: Subject matter wherein mechanical energy from an external source is applied to the piezoelectric element to produce an electric potential difference between at least two electrically accessible points on the surface of the element.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
5801475 Piezo-electricity generation device Sep. 1, 1998
5798601 Adjustable retrofit ignition kit for portable gas appliances Aug. 25, 1998
5789844 Acoustic transducer Aug. 4, 1998
5770914 Illuminated piezoelectric switch Jun. 23, 1998
5760530 Piezoelectric tactile sensor Jun. 2, 1998
5751091 Piezoelectric power generator for a portable power supply unit and portable electronic device equipped with same May. 12, 1998
5726522 Device for generating high voltage Mar. 10, 1998
5703295 Vibration sensing method and apparatus therefor Dec. 30, 1997
5668439 High voltage power supply Sep. 16, 1997
5636729 Piezo switch Jun. 10, 1997
5621264 Water craft using piezoelectric materials Apr. 15, 1997
5612849 Static eliminator for hair dryers Mar. 18, 1997
5610795 Self biasing charging member Mar. 11, 1997
5594293 Electroacoustic energy converter for transformation between thermal and electrical energy Jan. 14, 1997
5578889 Piezoelectric generation of electrical power from surface waves on bodies of water using suspended weighted members Nov. 26, 1996
5578766 Force detector/indicator Nov. 26, 1996
5554907 Vehicle speed measurement apparatus Sep. 10, 1996
5554922 Apparatus for the conversion of pressure fluctuations prevailing in fluid systems into electrical energy Sep. 10, 1996
5552657 Generation of electrical energy by weighted, resilient piezoelectric elements Sep. 3, 1996
5552656 Self-powered anti-fouling device for watercraft Sep. 3, 1996
5550420 Electronic ignition apparatus Aug. 27, 1996
5548177 Piezoelectric generator protection Aug. 20, 1996
5536990 Piezoelectric igniter Jul. 16, 1996
5512795 Piezoelectric electric energy generator Apr. 30, 1996
5504383 High voltage power supply Apr. 2, 1996
5495136 Illuminating system Feb. 27, 1996
5477217 Bidirectional road traffic sensor Dec. 19, 1995
5442150 Piezo electric switch Aug. 15, 1995
5349263 Pointing device suitable for miniaturization Sep. 20, 1994
5341062 Piezoelectric energy generator Aug. 23, 1994
5336959 Impact zone detection device Aug. 9, 1994
5332944 Environmentally sealed piezoelectric switch assembly Jul. 26, 1994
5315204 Piezoelectric snap action switch May. 24, 1994
5291872 Ignition apparatus for an internal combustion engine Mar. 8, 1994
5266863 Piezoelectric actuator Nov. 30, 1993
5262697 Piezoelectric mechanism for gas lighters Nov. 16, 1993
5231326 Piezoelectric electronic switch Jul. 27, 1993
5229680 Piezoelectric transformer using single crystal of LiNbO.sub.3 Jul. 20, 1993
5223763 Wind power generator and velocimeter Jun. 29, 1993
5216316 Piezo electric transducer Jun. 1, 1993
5216317 Converter apparatus Jun. 1, 1993
5210456 Impact sensing device May. 11, 1993
5202600 Piezoelectric device and related converting devices Apr. 13, 1993
5188447 Illuminating system Feb. 23, 1993
5187330 Positional determination Feb. 16, 1993
5170087 Electronic circuit for piezoelectric switch assembly Dec. 8, 1992
5160870 Ultrasonic image sensing array and method Nov. 3, 1992
5155408 Piezoelectric transducer having piezoelectric elements free from stress concentrations Oct. 13, 1992
5148074 Piezoelectric device and related converting devices Sep. 15, 1992
5142183 Electronic switch assembly Aug. 25, 1992

1 2 3 4 5 6 7 8 9 10 11 12










 
 
  Recently Added Patents
Generating compiled code that indicates register liveness
Combination of a microorganism and a phytosphingosine derivative, composition, methods of use
Multi display device and method of controlling the same
Transferring a document
Generating agricultural information products using remote sensing
Indexing, relating and managing information about entities
Selection of hash lookup keys for efficient retrieval
  Randomly Featured Patents
Sulfur transfer reagents for oligonucleotide synthesis
Methods of hydraulic fracturing and of propping fractures in subterranean formations
Multiple node/virtual input/output (I/O) server (VIOS) failure recovery in clustered partition mobility
Pre-packaged food warmer
N-substituted cycloalkyl and polycycloalkyl .alpha.-substituted Trp-Phe- and phenethylamine derivatives
Group coding system for serial data transmission
Solid rocket motor
Offshore support structure method and apparatus
Toothbrush
Electrode of electron gun for cathode ray tube