Diaphragm switch

Details Diaphragm switch Diaphragm switch

1996-10-11

1998-07-21

Dawson, Glenn K.

Surgery

Instruments

Oral pacifier

200 83N, A61J 1200, H01H 3540

Patent

active

057828679

ABSTRACT:
A diaphragm switch includes a housing having an interior space and a substrate in the housing supporting an electrical contact. A flexible membrane has opposite first and second surfaces, the first surface being electrically conductive. The membrane is mounted in the housing proximate the substrate with the first surface minutely spaced apart from the electrical contact. An activation pressure in the housing is communicated to the second surface of the membrane whereby deformation of the flexible membrane caused by the activation pressure closes the minute spacing between the electrically conductive first surface and the electrical contact, thereby completing an electrical circuit. A leakage path is operatively associated with the membrane between the first and second surfaces to equalize static pressure on both surfaces, whereby the flexible membrane is not deformed and the circuit is not complete in the absence of the activation pressure.

REFERENCES:
patent: 4554919 (1985-11-01), Hubert
patent: 4586621 (1986-05-01), Dahan
patent: 4726376 (1988-02-01), Dahan
patent: 4768510 (1988-09-01), Leung
patent: 4856519 (1989-08-01), Teves
patent: 5109864 (1992-05-01), Lu
patent: 5113048 (1992-05-01), Lafferty
patent: 5292335 (1994-03-01), Shin

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