Electric switch having improved attachment of movable contact to

Details Electric switch having improved attachment of movable contact to Electric switch having improved attachment of movable contact to

1994-09-12

1995-11-28

Recla, Henry J.

Electricity: circuit makers and breakers

Snap

Double snap

200453, 200275, 200454, H01H 510

Patent

active

054710243

ABSTRACT:
A flexible movable contact having fulcrums for pivoting the contact within notches of a terminal has a tab between the fulcrums offset downwardly and projecting outwardly that extends through an aperture in a flat U-shaped insulating contact carrier to attach one end of the contact to the carrier. A right-angle flat transition surface between the offset tab and primary plane of the contact abuts a convex surface forming an edge of the aperture to permit the contact to pivot relative to the carrier for self-alignment of the fulcrums in the notches. A beam of the contact extends obliquely away from the carrier and has lateral arms terminating in hook portions engaging an opposite side of the carrier. Ears bent over on the free end of the contact beam arrest overtravel movement of the carrier, which movement can be closely controlled by tolerances between the ears and hook portions during manufacture of the movable contact.

REFERENCES:
patent: 3052865 (1962-09-01), Pappano et al.
patent: 3158418 (1964-11-01), Rush
patent: 3828148 (1974-08-01), Roeser
patent: 4196325 (1980-04-01), Povilaitis
patent: 4904832 (1990-02-01), Nagahara et al.
patent: 5017747 (1991-05-01), Nagahara et al.

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