Key-operated switch and an assemblage of such switches for elect

Details Key-operated switch and an assemblage of such switches for elect Key-operated switch and an assemblage of such switches for elect

1978-08-09

1980-06-10

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, H01H 1370

Patent

active

042074436

ABSTRACT:
An assemblage of hand-operated switches includes a plurality of printed fixed contact sets on an insulating base. A spacer sheet overlying the insulating base has openings therein in register with the fixed contact sets. Further overlying the spacer sheet is a plastic film having printed movable contacts formed thereon in register with the spacer sheet openings. Each switch is equipped with a key or button, upon depression of which the corresponding movable contact is moved into engagement with the corresponding fixed contact set through the corresponding spacer sheet opening. The plastic film together with the printed movable contacts thereon can be replaced by a single piece of resilient sheet metal.

REFERENCES:
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patent: 3617660 (1971-11-01), Krakinowski
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patent: 4154178 (1979-05-01), Brown et al.
R. H. Harris et al.; IBM Tech. Disc. Bull., "Force Concentrator For Touch Sensitive Panel Using Snap-Action Switches, " vol. 19; No. 1, Jun. 6, 1976; p. 238.

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