Energy harvesting apparatus and method

Details Energy harvesting apparatus and method Energy harvesting apparatus and method

2006-12-20

2009-06-02

Leung, Quyen P (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S329000

Reexamination Certificate

active

07541720

ABSTRACT:
An energy harvesting apparatus and method. In one form the apparatus makes use of a pair of flexible beams that are supported at first ends thereof from a base. Second ends of each of the beams are operatively coupled to rigid links. The rigid links are in turn operatively coupled to a mass component that is free to move linearly in a path generally parallel to the longitudinal axes of the flexible beams. Movement of the mass component in response to vibration forces causes a twisting moment to be applied at the second end of each flexible beam. This causes a uniform flexing of each of the flexible beams. A piezoceramic material layer on each beam generates electrical signals in response to the flexing motion of the beam.

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patent: 2006/0175937 (2006-08-01), Clingman et al.
patent: 2006/0202592 (2006-09-01), Ruggeri et al.
patent: 2007/0145861 (2007-06-01), Tanner

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