Piezoelectric switch

Details Piezoelectric switch Piezoelectric switch

1986-08-15

1987-09-29

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310330, 310367, 200181, H01L 4108

Patent

active

046971181

ABSTRACT:
A switch is provided wherein a piezoelectric bimorph element is used to provide many separately controllable, closely spaced switchable contacts. The element includes at least two oppositely extending fingers connected by a common spine. The element spine is mounted to a case with the fingers spaced from an inner case surface. Electronic circuit means are mounted on the element spine for applying a separate electrical potential to each of the element fingers. A separate movable electrical contact is disposed on each of the element fingers spaced from the spine and insulated from the means for applying the separate electrical potentials to the fingers. A separate stationary contact is provided on an inner case surface opposite each of the movable contacts. In operation, a separate electrical potential is applied to each of the element fingers for selectively causing each finger to deflect and force its movable contact into electrical connection with the opposing stationary contact.

REFERENCES:
patent: 2203332 (1940-06-01), Kinsley
patent: 3646413 (1972-02-01), Oomen
patent: 4093883 (1978-06-01), Yamamoto
patent: 4112279 (1978-09-01), Brohard
patent: 4295172 (1981-10-01), Fukada et al.
patent: 4368402 (1983-01-01), Torii et al.
patent: 4420266 (1983-12-01), Kolm et al.
patent: 4450375 (1984-05-01), Siegal
patent: 4553061 (1985-11-01), Germano
patent: 4598587 (1986-07-01), Dwyer et al.
patent: 4633121 (1986-12-01), Ogawa

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