Pushbutton keyboard assembly with over center diaphragm contact

Details Pushbutton keyboard assembly with over center diaphragm contact Pushbutton keyboard assembly with over center diaphragm contact

1975-03-17

1976-12-07

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, 200275, 200302, H01H 1370, H01H 106

Patent

active

039964280

ABSTRACT:
A switch assembly having a plurality of movable elements for connection with underlying fixed contact elements carried by a base member, the movable insulative support sheet mounted on the base member. Each movable element is spaced by an electrically insulative sheet carried by the support sheet, and has a pair of opposed tines extending through the support sheet received in base member apertures. The movable elements may be dome shaped, partially cylindrical in shape, and span a plurality of the fixed contact elements.

REFERENCES:
patent: 3684842 (1972-08-01), Boulanger
patent: 3745287 (1973-07-01), Walker
patent: 3749859 (1973-07-01), Webb et al.
patent: 3783205 (1974-01-01), Boulanger
patent: 3806673 (1974-04-01), Boulanger
patent: 3811025 (1974-05-01), Bach
patent: 3849611 (1974-11-01), Walker, Jr.
patent: 3854018 (1974-12-01), Reynolds et al.
patent: 3928736 (1975-12-01), Drage
patent: 3941953 (1976-03-01), Misson et al.

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