Snap action switch

Details Snap action switch Snap action switch

1975-04-04

1976-12-07

Smith, Jr., David

Electricity: circuit makers and breakers

Special application

Liquid or moisture responsive

H01H 1328

Patent

active

039964361

ABSTRACT:
A double pole snap action switch operable by opposite movements of an operating lever having operating means comprising a bifurcated actuating lever having transversely spaced side legs mounted on a pivot, the free end of the actuating lever having transversely extending insulating portions connected to the movable terminals, and an operating lever mounted on the pivot. The operating lever has an external lever portion on the outer side of the pivot and an internal lever portion on the inner side of the pivot extending in the same direction as the actuating lever, positioned between the side legs thereof and having its free end spaced toward the pivot from the free end of the actuating lever. A compression spring is interposed between the free end of the actuating lever and the inner free end of the operating lever, so that movement of the external portion of the operating lever from one of its stable operating positions into parallelism with the actuating lever compresses the spring, the spring expanding when the levers pass through parallelism to move them and the movable terminals into their opposite stable positions.

REFERENCES:
patent: 2823283 (1958-02-01), Malone
patent: 3042770 (1962-07-01), Beeman

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