Push button switch assembly

Details Push button switch assembly Push button switch assembly

1977-02-08

1978-12-12

Hart, Ro E.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200159R, 200 5A, 200156, H01H 312

Patent

active

041297636

ABSTRACT:
A pushbutton switch is described which comprises a movable contact member having a snap-action disc portion bowing at its center away from said base plate and provided at its center with a movable contact and at its periphery with one or more movable contacts, and a base plate having fixed contacts located in the positions corresponding to the movable contacts. When the pushbutton is depressed to push the movable contact member toward the base plate, the movable contacts located at the periphery first come into contact with the respective fixed contacts and then the disc portion snaps or turns over toward the base plate so as to bring the movable contact located at the center into contact with the fixed contact on the base plate.

REFERENCES:
patent: 3888807 (1975-06-01), Lockard
patent: 3996429 (1976-12-01), Chu

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