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Thermacoustic piezoelectric generator

United States Patent

August 10, 2010
View the Complete Patent at the US Patent & Trademark Office
An electroactive transducer converts between acoustical power and electrical power. The transducer includes a diaphragm and a perimeter member. The perimeter member includes at least one electroactive element and is mechanically coupled to the perimeter of the diaphragm such that displacement of the diaphragm stresses the electroactive element.
Keolian; Robert M. (State College, PA), Wuthrich; John W. (Albany, NY), Bastyr; Kevin J. (Someville, MA)
The Penn State Research Foundation (University Park, PA)
11/ 492,311
July 25, 2006
GOVERNMENT SPONSORSHIP This work was supported by the Office of Naval Research grant number N00014-95-1-0212 and N00014-03-0652, and the Department of Energy FreedomCAR and Vehicle Technologies Program, through cooperative agreement number DE-FC26-04NT42113. The United States Government has certain rights in this invention.