Push-button switch

Details Push-button switch Push-button switch

1975-03-03

1977-02-01

Scott, James R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

58 50R, H01H 312

Patent

active

040063356

ABSTRACT:
A push-button switch particularly adapted for use in a digital watch has an open-ended chamber formed at one end of an electrically conductive body and has a passage communicating with the chamber from the opposite end of the body, has electrically insulating spacer means secured in sealing relation to the open-chamber end supporting at fixed contact extending from the chamber through the open chamber end, has a resilient electrical contact supported on the spacer means within the chamber with the perimeter of the resilient contact in electrical engagement with the body and with a central portion of the electrical contact disposed in selected spaced relation to the fixed contact, has a flexible diaphragm secured between the resilient electrical contact and said body passage sealing the chamber opposite the open chamber end, and has a push-button operating member slidable in the body passage for selectively depressing the central portion of the resilient contact through the flexible diaphragm into electrical engagement with the fixed contact to close an electrical circuit, the body being adapted to be secured to a watch case by press-fitting into a watch case aperture.

REFERENCES:
patent: 884121 (1908-04-01), Apold
patent: 2916871 (1959-12-01), Wegner
patent: 3767875 (1973-12-01), Schneikart et al.
patent: 3946182 (1976-03-01), Holder

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