Piezoelectric device

Details Piezoelectric device Piezoelectric device

1994-11-28

1997-01-14

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310328, 310331, 310367, 310369, H01L 4108

Patent

active

055942920

ABSTRACT:
A piezoelectric device includes a ceramic substrate having at least one cavity defined by a thin-walled region of the substrate. The thin-walled region has an outer surface provided with at least one piezoelectric transducer and also with a non-operative portion situated adjacent to the piezoelectric transducer such that each piezoelectric transducer surrounds the non-operative portion, or two piezoelectric transducers are arranged on both sides of the non-operative portion.

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patent: 4938742 (1990-07-01), Smits
patent: 5079472 (1992-01-01), Uhl et al.
patent: 5210455 (1993-05-01), Takeuchi et al.
patent: 5233259 (1993-08-01), Krishnaswamy et al.

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