Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2011-04-19
2011-04-19
Dougherty, Thomas M (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
Reexamination Certificate
active
07928634
ABSTRACT:
A system and method are disclosed for providing a piezoelectric electromagnetic hybrid vibrating energy harvester. The invention comprises a piezoelectric vibrating energy harvesting device that harvests electrical energy from vibrations using a piezoelectric effect. The invention also comprises an electromagnetic vibrating energy harvesting device that simultaneously harvests electrical energy from the same vibrations using electromagnetic induction. A permanent magnet mass mounted on a cantilever host beam of the piezoelectric vibrating energy harvesting device provides a variable magnetic flux to a fixed conductive winding of the electromagnetic vibrating energy harvesting device when the permanent magnet mass vibrates.
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Addison Karen
Dougherty Thomas M
Honeywell International , Inc.
Munck Carter, LLP
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