Electricity: circuit makers and breakers – Electric switch details – Actuators
Patent
1984-10-19
1986-12-23
Marcus, Stephen
Electricity: circuit makers and breakers
Electric switch details
Actuators
200159R, H01H 312
Patent
active
046313788
ABSTRACT:
An improved push button switch is disclosed which essentially comprises a key stem displaceable up and down in the switch mounting frame, a depressing portion fixedly secured to the key stem and a contact portion adapted to be turned on or off by depressing force transmitted from the key stem. The depressing portion is molded of plastic material integral with the key stem in such a configuration that it has resiliency which is effective in the vertical direction and extends from the side wall of the key stem. To give resiliency to the depressing portion the latter is preferably designed in the snake motion-shaped configuration extending in the vertical direction with a plurality of U-shaped bent parts formed thereon. A return spring is disposed so as to return the key stem to the original position and its upper end is engaged to an engagement portion which is located opposite to the depressing portion. The depressing portion may be designed in the cantilever-shaped configuration which extends from the key stem in such a manner as to surround a part or the whole of the periphery of the key stem. To damp bounding sound the cantilever-shaped depressing portion is formed with upwardly oriented projections which abut against the switch mounting frame during return movement of the key stem.
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Jelco. Co., Ltd.
Marcus Stephen
Sholl Linda J.
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