Electrical switch having a floating bridge member

Details Electrical switch having a floating bridge member Electrical switch having a floating bridge member

1979-02-12

1980-11-18

Shepperd, John W.

Electricity: circuit makers and breakers

Special application

Liquid or moisture responsive

200243, 200246, H01H 1326

Patent

active

042347696

ABSTRACT:
In an electrical switch including a housing and a button in which the button, by means of a manual depression thereof in a single direction is movable relative to the housing between two positions and during this movement causes a snap spring inserted in the button to slip from a first extreme position to a second one, the snap spring is set up or interlocked between two bearings or seats provided in opposite walls of the housing. The central part of the snap spring is arranged in a bridge member which carries resilient contact fingers. The bridge member is further arranged with a two-sided clearance in a recess provided in the button. The switch overcomes the problems of microphonic noise generated by any movement between the button and the housing and reduces considerably the contact resistances at the contact points due to a scrabing movement between the metal parts establishing the electrical connections.

REFERENCES:
patent: 3200227 (1965-08-01), Karch
patent: 3699276 (1972-10-01), Atakkaan
patent: 4064381 (1977-12-01), Mullen

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