Piezoelectric switch apparatus for a communication device

Details Piezoelectric switch apparatus for a communication device Piezoelectric switch apparatus for a communication device

1997-08-25

1999-11-02

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310311, 310339, 310319, H01L 4108

Patent

active

059776900

ABSTRACT:
A control switch for a radio is formed using an electro-mechanical assembly (400) which includes an array of cantilevered beams (402) laminated with piezoelectric film. A movable surface (404) includes protrusions (406) positioned to deflect the cantilevered beams and generate pulsed signals in a coded manner. Electronic circuitry (410) stores the pulsed signals and associates the signals with a position of the switch.

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patent: 4868448 (1989-09-01), Kornrumpf
patent: 5034648 (1991-07-01), Gastgeb
patent: 5406682 (1995-04-01), Zimnicki et al.
patent: 5632669 (1997-05-01), Azarian et al.
patent: 5885131 (1999-03-01), Azarian et al.

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