Circular piezoelectric apparatus

Details Circular piezoelectric apparatus Circular piezoelectric apparatus

2007-09-19

2009-02-17

SanMartin, Jaydi (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S359000

Reexamination Certificate

active

07492078

ABSTRACT:
A circular piezoelectric apparatus includes an electrode assembly which has an independent electrode located on a perimeter side wall of the circular piezoelectric apparatus and two separated electrodes located respectively at two opposite surfaces of the circular piezoelectric apparatus, a first structure located between the two separated electrodes that has a polarized direction coincided with a first axial direction directing from one electrode of the two separated electrodes to the other electrode thereof, and a second structure surrounding the first structure about the first axial direction and having a polarized direction coincided with a radial direction of the perimeter. One of the three electrodes is electrically connected a ground electrode to provide a voltage source for supplying an input voltage and a load through at least a conductive wire, and another electrode is electrically connected to an input electrode of the voltage source through another conductive wire.

REFERENCES:
patent: 2953755 (1960-09-01), Mattiat
patent: 6707235 (2004-03-01), Brebøl
patent: 7183698 (2007-02-01), Chou et al.
patent: 1253772 (2006-04-01), None

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