Self-stressing snap spring assembly for electrical contacts

Details Self-stressing snap spring assembly for electrical contacts Self-stressing snap spring assembly for electrical contacts

1995-09-08

1996-09-17

Walczak, David J.

Electricity: circuit makers and breakers

Snap

Double snap

200407, 200447, 200448, 200454, H01H 522

Patent

active

055559727

ABSTRACT:
An ultra high production snap acting switch includes a blanked sheet metal tab for providing extremely consistent and repeatable operation. The switch simply includes a sheet metal M-blade automatically spot welded (or riveted) to a sheet metal spring arm. The spring arm has an integral tab pressed between two flexible legs of the M-blade. The stress imparted by the tab accurately distorts the M-blade so that it assumes a very predictable bistable operation.

REFERENCES:
patent: Re28578 (1975-10-01), Burch et al.
patent: 3213228 (1965-10-01), Burch et al.
patent: 4032734 (1977-06-01), Burch
patent: 4424506 (1984-01-01), Burch
patent: 4587387 (1986-05-01), Piguet
patent: 4796355 (1989-01-01), Burch et al.

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