Importance

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Abstract

An electric pushbutton switch wherein the housing confines a reciprocable plunger which is coupled to and is movable by a pushbutton from an extended or inoperative to a depressed or operative position. The housing contains one or more pairs of fixed contacts and a mobile contact for each pair of fixed contacts. When the plunger is depressed, it simultaneously engages all mobile contacts with the respective pairs of fixed contacts through the medium of a ring-shaped insert which is floatingly installed in the housing between three or more spaced-apart legs of the plunger and discrete pushers, one for each mobile contact and each biased against the insert by a discrete spring acting upon a composite carrier for the respective mobile contact. Additional springs can react against the housing to bear against the insert with a force acting upon the insert within the polygon which is defined by the points of contact between the legs of the plunger and the insert. This also applies for the points of contact between the pushers and the insert.

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First Claim