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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
8525390 Fluid power generation system having a generator with an electrical-charge-producing material Sep. 3, 2013
8513859 Interactive panel comprising a substrate and at least two piezoelectric transduction devices Aug. 20, 2013
8513861 Piezoelectric power generator Aug. 20, 2013
8508108 Polymer metal composite membranes Aug. 13, 2013
8508105 Inertial sensor Aug. 13, 2013
8508057 Power generator Aug. 13, 2013
8492957 Apparatus for generating electric energy Jul. 23, 2013
8492958 Device for converting thermal power into electricity Jul. 23, 2013
8487514 Apparatus and method for harvesting energy Jul. 16, 2013
8476808 1-d tire apparatus Jul. 2, 2013
8471439 Active piezoelectric energy harvester with embedded variable capacitance layer and method of manufacturing the same Jun. 25, 2013
8456064 Holster-integrated piezoelectric energy source for handheld electronic device Jun. 4, 2013
8456063 Device for converting mechanical impact energy into electrical energy with optimised efficiency Jun. 4, 2013
8450909 Piezoelectric power generating apparatus May. 28, 2013
8446069 Switch device May. 21, 2013
8446072 High-efficiency compact miniaturized energy harvesting and storage device May. 21, 2013
8441172 Nonlinear oscillator for vibration energy harvesting May. 14, 2013
8441173 Wake-up unit for waking up an electronic device and method of waking up an electronic device May. 14, 2013
8432086 Ferro fluid for inducing linear stress Apr. 30, 2013
8432073 Power generating device Apr. 30, 2013
8432049 Electrical generator Apr. 30, 2013
8427034 Flooring systems and methods of making and using same Apr. 23, 2013
8421313 Energy harvesting device Apr. 16, 2013
8415859 Piezoelectric nanodevices Apr. 9, 2013
8415860 Spring disc energy harvester apparatus and method Apr. 9, 2013
8415861 Wave power generator Apr. 9, 2013
8410667 Electrical generators for low-frequency and time-varying rocking and rotary motions Apr. 2, 2013
8410661 Method of generating electrical energy in an integrated circuit, corresponding integrated circuit and method of fabrication Apr. 2, 2013
8405279 Coupling piezoelectric material generated stresses to devices formed in integrated circuits Mar. 26, 2013
8400046 Power generation unit Mar. 19, 2013
8395587 Haptic response apparatus for an electronic device Mar. 12, 2013
8378558 Thermoelectric generator Feb. 19, 2013
8373332 Energy harvesting electric device Feb. 12, 2013
8368290 Rectifier-free piezoelectric energy harverster and battery charger Feb. 5, 2013
8358049 Energy converters and associated methods Jan. 22, 2013
8354776 Apparatus for generating electrical energy and method for manufacturing the same Jan. 15, 2013
8351207 Heat pipe capable of transforming dynamic energy into electric energy and related heat-dissipating module Jan. 8, 2013
8344598 Piezoelectric power generation device Jan. 1, 2013
8344597 Matrix-assisted energy conversion in nanostructured piezoelectric arrays Jan. 1, 2013
8344586 Temperature-activated voltage generator Jan. 1, 2013
8334638 Piezoelectric power generation device Dec. 18, 2012
8330334 Apparatus employing piezoelectric energy harvester capable of generating voltage to drive power conditioning circuit and method of manufacturing the same Dec. 11, 2012
8330335 Piezo magnetostrictive device Dec. 11, 2012
8324788 Piezoelectric power generator Dec. 4, 2012
8319403 Electroactive polymer transducers for sensory feedback applications Nov. 27, 2012
8319402 Bowl-shaped wide-band vibration energy harvester Nov. 27, 2012
8319401 Air movement energy harvesting with wireless sensors Nov. 27, 2012
8316526 Method for forming an electroactive polymer Nov. 27, 2012
8314722 Keyboard based in polymer, copolymer or composites with piezo- and/or pyroelectric properties and respective use Nov. 20, 2012
8310114 Power generating device Nov. 13, 2012

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