Patent ID: 8358049
Filing Date: 2013-01-22
Classification: H02N,Y10S

Abstract:
1. A device for converting between mechanical vibration energy having a vibration frequency and electrical energy, comprising: a first structural member; a second structural member spaced apart from the first structural member; a first piezoelectric element and a second piezoelectric element individually extending between the first structural member and the second structural member; and a deflection member between the first and second piezoelectric elements, wherein the deflection member extends, rather than bends, the first and second piezoelectric elements in a rest position such that the first and second piezoelectric elements are under a uniform pretension from the deflection member and the first and second structural members, the pretension having a value that sets a target resonance frequency of the device to at least approximately coincide with the vibration frequency of the mechanical vibration energy.