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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
7592712 Electric generator device actuated by a fluid flow Sep. 22, 2009
7579755 Electrical-to-mechanical transducer apparatus and method Aug. 25, 2009
7579757 Method and micro power generator for generating electrical power from low frequency vibrational energy Aug. 25, 2009
7567013 Vibration power generation Jul. 28, 2009
7564170 Piezoswitch Jul. 21, 2009
7560855 Ferroelectric energy generator, system, and method Jul. 14, 2009
7560856 Harvesting energy from flowing fluid Jul. 14, 2009
7545076 System and method for tracking drive frequency of piezoelectric motor Jun. 9, 2009
7541720 Energy harvesting apparatus and method Jun. 2, 2009
7535155 Piezoelectric device and piezoelectric switch provided with the same May. 19, 2009
7535156 Energy scavenger and method for manufacturing the same May. 19, 2009
7528528 Apparatus for autonomous power supply of power-using devices located in the proximity of a road, and process therefor May. 5, 2009
7521842 Magnetostrictive / piezo remote power generation, battery and method Apr. 21, 2009
7521841 Strain energy shuttle apparatus and method for vibration energy harvesting Apr. 21, 2009
7511404 Power generator using piezoelectric material Mar. 31, 2009
7511452 Portable electronic device and capacitive charger providing data transfer and associated methods Mar. 31, 2009
7504763 Power generator Mar. 17, 2009
7504764 Electric power generating apparatus for movement type equipment and self-generation system having the same Mar. 17, 2009
7485978 Compliant walled combustion devices for producing mechanical and electrical energy Feb. 3, 2009
7479727 Apparatus and method for pyroelectric and piezoelectric power generation and thermoelectric heat transfer Jan. 20, 2009
7471033 Energy harvester with adjustable resonant frequency Dec. 30, 2008
7459837 Broadband energy harvester apparatus and method Dec. 2, 2008
7453187 Piezoelectric micro-transducers, methods of use and manufacturing methods for same Nov. 18, 2008
7446459 Hybrid piezoelectric energy harvesting transducer system Nov. 4, 2008
7446451 Systems and methods for converting heat to electrical power Nov. 4, 2008
7443075 Entrapment detecting system Oct. 28, 2008
7443082 Piezoelectric polymer composite article and system Oct. 28, 2008
7443083 Piezoelectric powered vehicles and motors Oct. 28, 2008
7443087 Polymer actuator Oct. 28, 2008
7439657 Broadband energy harvester apparatus and method Oct. 21, 2008
7439630 System and methodology for generating electricity using a chemical heat engine and piezoelectric material Oct. 21, 2008
7436099 Electroactive polymer pre-strain Oct. 14, 2008
7436104 Non-linear piezoelectric mechanical-to-electrical generator system and method Oct. 14, 2008
7429801 System and method for generating electric power from a rotating tire's mechanical energy Sep. 30, 2008
7415874 Method and system for generating electrical energy within a vehicle tyre Aug. 26, 2008
7411338 Structural material with piezoelectric material particles Aug. 12, 2008
7411337 Electrical energy-generating system and devices and methods related thereto Aug. 12, 2008
7397169 Energy harvesting using a thermoelectric material Jul. 8, 2008
7397170 Piezoelectric mechanism for generating discharge voltage Jul. 8, 2008
7394183 Kinetic micro-generator: a method of generating electrical current via magnetostriction and the piezoelectric effect Jul. 1, 2008
7388321 Piezoelectric body, electric generator and polymer actuator Jun. 17, 2008
7385336 Microbiological energy source for driving a consumer Jun. 10, 2008
7345407 Human powered piezoelectric power generating device Mar. 18, 2008
7312557 Mass-spring unit for generating power by applying a cyclic force to a piezoelectric member due to an acceleration of the mass-spring unit Dec. 25, 2007
7304416 Maximizing power generation in and distributing force amongst piezoelectric generators Dec. 4, 2007
7301254 High efficiency radio isotope energy converters using both charge and kinetic energy of emitted particles Nov. 27, 2007
7301454 Sensor system Nov. 27, 2007
7282838 Electrical energy generator device with micro-fan array Oct. 16, 2007
7258533 Method and apparatus for scavenging energy during pump operation Aug. 21, 2007
7250708 Electric switch, especially a piezo switch, with optical and/or mechanical feedback of the switching operation Jul. 31, 2007

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