Thin film, thermoplastic piezoelectric switches

Details Thin film, thermoplastic piezoelectric switches Thin film, thermoplastic piezoelectric switches

Filed on

1977-09-23

Date issued

1979-01-30

Examiner

Budd, Mark O.

Patent Class

Electrical generator or motor structure

SubClass

Non-dynamoelectric

SubSubClass

Piezoelectric elements and devices

Other Related Categories

310326, 310339, 310800, H01L 4110

Type

Patent

Status

active

Patent number

041374754

Description

ABSTRACT:
A piezoelectric switch is disclosed for providing a continuous output in response to a contact pressure. An oscillator is brought into contact with a thermoplastic piezoelectric film, having electrodes on both surfaces thereof, via an elastic wave absorbing member.The oscillations cause constantly changing stress in the film, resulting in a constantly varying electric field between the electrodes. The magnitude of the electric field depends on the contact pressure between the oscillator and the piezoelectric element.

REFERENCES:
patent: 3321648 (1967-05-01), Kolm
patent: 3749947 (1923-07-01), Kawada et al.
patent: 3843898 (1974-10-01), Maciag
patent: 3935485 (1976-01-01), Yoshida et al.
patent: 3986061 (1976-10-01), Suzuki et al.

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