Piezoelectric multimorph switches

Details Piezoelectric multimorph switches Piezoelectric multimorph switches

1977-04-20

1978-06-06

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310332, 200181, H01L 4110

Patent

active

040938832

ABSTRACT:
A multimorph is a piezoelectric element which moves or bends as an incident to being charged or otherwise subjected to an electrostatic field so that a potential gradient appears across the element. The amount of movement or bending can be sufficient to actuate electrical contacts whereby the multimorph is useful in switches and relays. Improved multimorph construction and mounting, improved contact construction and mounting, and improved arrangements for subjecting multimorphs to electrostatic charges to provide improved switching and relay units are disclosed. Such units may be incorporated in time delay systems and the manner in which that can be done is disclosed along with other applications.

REFERENCES:
patent: 2182340 (1939-12-01), Hearn
patent: 2471967 (1949-05-01), Mason
patent: 2714642 (1955-08-01), Kinsley
patent: 2835761 (1958-05-01), Crownover
patent: 2928069 (1960-03-01), Petermann
patent: 3405289 (1968-10-01), Gikow
patent: 3781955 (1974-01-01), Lavrinenko
IBM Technical Disclosure Bulletin, vol. 1, No. 5, Feb. 1959, Capacitive Relay by Green, p. 5.

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