Snap-action switch with contact wiping action

Details Snap-action switch with contact wiping action Snap-action switch with contact wiping action

1977-04-20

1978-10-31

Truhe, J. V.

Electricity: circuit makers and breakers

Special application

Liquid or moisture responsive

200339, 200153K, H01H 1328

Patent

active

041236343

ABSTRACT:
An electric snap-action electric switch is disclosed which employs movable contact means having an inverted V-shaped cam surface. The movable contact means is spring biased into engagement along its cam surface with the end of a pivoted operator lever. Upon movement from one extreme position the lever cams and pivots the contact means inwardly of the switch until the end of the lever rides beyond the apex of the V-shaped surface, whereupon the contact means moves with snap action under spring action to change switch circuits. Contact wiping action occurs during inward pivotal movement of said contact means, and abutting stationary contact engagement results from its snap-action movement.

REFERENCES:
patent: 1605910 (1926-11-01), Appleton et al.
patent: 1912623 (1933-06-01), Douglas
patent: 2399462 (1946-04-01), Bryant
patent: 2429770 (1947-10-01), Popp
patent: 3177197 (1964-01-01), Carling et al.
patent: 3311716 (1967-03-01), Carlson
patent: 3399285 (1968-08-01), Haderer
patent: 3403237 (1968-09-01), Wysong
patent: 3770920 (1973-11-01), Poliak
patent: 3999024 (1976-12-01), Marquardt

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