Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1973-09-17
1976-04-13
Rubinson, G. Z.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200264, H01H 1352
Patent
active
039506274
ABSTRACT:
A push button switch comprises a key top having a recess and a resilient member provided so as to surround the recess of the key top. The resilient member has a projected portion extending therefrom in the direction away from the recess of the key top, and at least the end of the projected portion is formed of conductive material. A contact member is secured to a base plate in opposed relationship with the projected portion. A holder member holds the key top in such a manner that the projected portion of the resilient member is normally spaced apart from the contact member but engages the contact member upon depression of the key top.
REFERENCES:
patent: 3379851 (1968-04-01), Weremy
patent: 3735058 (1973-05-01), Berry
patent: 3818153 (1974-06-01), Arvai
Harada Yuji
Murata Minoru
Canon Kabushiki Kaisha
Rubinson G. Z.
Smith William J.
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