Composite piezoelectric vibrator with trapezoidal cross section

Details Composite piezoelectric vibrator with trapezoidal cross section Composite piezoelectric vibrator with trapezoidal cross section

1985-08-01

1986-10-14

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310348, H01L 4108

Patent

active

046174885

ABSTRACT:
A piezoelectric vibrator capable of vibrating in an expansion mode of vibration comprising a piezoelectric vibrating element, composed of a vibrateable substrate, made of a constant elastic metal, a thin film of piezoelectric material and an exciting electrode layer. The substrate has a generally trapezoidal cross-sectional representation, as viewed in a direction perpendicular to the direction of propagation of vibrations, with one of the opposite surfaces thereof adjacent the thin film being greater than the other of said opposite surfaces.

REFERENCES:
patent: 4293986 (1981-10-01), Kobayashi et al.
patent: 4469975 (1984-09-01), Nakamura et al.

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