Push button switch

Details Push button switch Push button switch

1981-07-01

1983-05-24

Shepperd, John W.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200153LA, 200153M, 200159R, 200241, 200314, H01H 312

Patent

active

043852190

ABSTRACT:
A push button switch including a housing, a depressible plunger spring-urged towards a rest position in the housing, and a pair of cooperating blade springs each fixed at one end and carrying respective electrical contacts at the other end. Each spring has a shoulder which is engageable by a respective shoulder portion of the plunger during depression to cause the springs to move inwardly toward each other such that the respective electrical contacts engage. The plunger includes an integral spacing member located between the blade springs such that the two springs, and hence their respective electrical contacts, are spaced apart by the spacing member when the plunger is in the rest position. The plunger shoulders, blade springs and spacing member combine to provide tactile feedback when the spacing member moves clear of the springs allowing the contacts to engage.

REFERENCES:
patent: 3751618 (1973-08-01), Hallerberg
patent: 3835276 (1974-09-01), Field
patent: 3902032 (1975-08-01), Koepke

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