Piezoelectric actuator

Details Piezoelectric actuator Piezoelectric actuator

1998-10-02

2000-03-28

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310330, 310359, 310366, H01L 4108

Patent

active

060435879

ABSTRACT:
A piezoelectric actuator or sensor includes a solid state body made of a monolithic piezoelectric material, a plurality of actuating electrodes formed as closed-loop electrodes entirely around the perimeter of the solid state body, and a support plate with two contact electrodes respectively having interdigitally intermeshing contact fingers arranged thereon. The intermeshing or alternating contact fingers of the two contact electrodes respectively contact alternating ones of the actuating electrodes, preferably through an adhesive layer having conducting particles dispersed therein. The energized actuating electrodes effectively form virtual piezoelectric layers in the solid state body.

REFERENCES:
patent: 2540187 (1951-02-01), Cherry, Jr.
patent: 2540194 (1951-02-01), Ellett
patent: 2836737 (1958-05-01), Crownover
patent: 3115588 (1963-12-01), Hueter
patent: 3531742 (1970-09-01), Saito et al.
patent: 5225731 (1993-07-01), Owen
patent: 5786655 (1998-07-01), Okumura et al.
patent: 5861704 (1999-01-01), Kitami et al.

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