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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
6737789 Force activated, piezoelectric, electricity generation, storage, conditioning and supply apparatus and methods May. 18, 2004
6720712 Piezoelectric identification device and applications thereof Apr. 13, 2004
6710602 Repair device for decorative light shunt Mar. 23, 2004
6703764 Pointing apparatus using piezoelectric film, method for producing the apparatus, apparatus and method for detecting pointing information thereof Mar. 9, 2004
6700314 Piezoelectric transducer Mar. 2, 2004
6700310 Self-powered wireless switch Mar. 2, 2004
6700217 Apparatus for converting ocean wave motion to electricity Mar. 2, 2004
6655035 Piezoelectric generator Dec. 2, 2003
6657365 Hybrid piezo-film continuous line and discrete element arrays Dec. 2, 2003
6628040 Electroactive polymer thermal electric generators Sep. 30, 2003
6591524 Advertising article with automatically activated flasher or sound module Jul. 15, 2003
6577559 Electronic converter for converting an acoustic signal into a pseudo-digital signal, timepiece including such a converter and two-directional communication method via acoustic waves Jun. 10, 2003
6533576 Lighter with child resistant actuating lever Mar. 18, 2003
6528928 Switched resonant power conversion electronics Mar. 4, 2003
6501211 Ultra-sonic transducer assembly incorporated into a printed circuit board for determining tension forces in a bolt Dec. 31, 2002
6486589 Circuit card assembly having controlled vibrational properties Nov. 26, 2002
6479920 Direct charge radioisotope activation and power generation Nov. 12, 2002
6433465 Energy-harvesting device using electrostrictive polymers Aug. 13, 2002
6429576 Centrifugal impulse piezoelectric electrical generator Aug. 6, 2002
6424079 Energy harvesting eel Jul. 23, 2002
6411016 Piezoelectric generating apparatus Jun. 25, 2002
6407484 Piezoelectric energy harvester and method Jun. 18, 2002
6407483 Method of power supply for electronic systems and device therefor Jun. 18, 2002
6376968 Field-induced piezoelectricity for electrical power generation Apr. 23, 2002
6310428 Piezoelectric switch with audible feedback Oct. 30, 2001
6307304 Switch system Oct. 23, 2001
6252336 Combined piezoelectric silent alarm/battery charger Jun. 26, 2001
6246155 Bimorph piezoelectric device for acceleration sensor and method of its manufacture Jun. 12, 2001
6222304 Micro-shell transducer Apr. 24, 2001
6218966 Tactile feedback keyboard Apr. 17, 2001
6198205 One-shot high-output piezoid power supply Mar. 6, 2001
6194815 Piezoelectric rotary electrical energy generator Feb. 27, 2001
6064141 Piezoelectric switch May. 16, 2000
6060817 Switching method using a frequency domain piezoelectric switch May. 9, 2000
6046528 Selectively actuatable piezoelectric ignition mechanism Apr. 4, 2000
6037704 Ultrasonic power communication system Mar. 14, 2000
6031317 Piezoelecric shock sensor Feb. 29, 2000
6011346 Apparatus and method for generating electricity from energy in a flowing stream of fluid Jan. 4, 2000
6003390 Tactile sensor, in particular for electrical equipment Dec. 21, 1999
5988646 Impact sensor and target apparatus embodying the same Nov. 23, 1999
5982304 Piezoelectric switch with tactile response Nov. 9, 1999
5977690 Piezoelectric switch apparatus for a communication device Nov. 2, 1999
5977688 Electronic apparatus for being switched using piezoelectric element Nov. 2, 1999
5955790 Apparatus for converting tide/wave motion to electricity Sep. 21, 1999
5936521 Piezo film sensor switch responsive to blowing forces Aug. 10, 1999
5927962 Piezoelectric mechanism for gas lighters with externally closed telescopic body Jul. 27, 1999
5900572 Pliable pickup for stringed instrument May. 4, 1999
5883459 Electrical switch assembly encapsulated against moisture intrusion Mar. 16, 1999
5854530 Piezoelectric lighter which has a higher level of difficulty for operation Dec. 29, 1998
5814921 Frequency multiplying piezoelectric generators Sep. 29, 1998

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