Snap action switch blades

Details Snap action switch blades Snap action switch blades

1978-07-14

1981-02-10

Bell, Jr., Houston S.

Electricity: circuit makers and breakers

Electric switch details

Contact

200 67DA, H01H 522

Patent

active

042503671

ABSTRACT:
A snap action switch blade has two resilient legs which project from an integral base portion beyond and on each side of a tongue to which an operating force is applied. The legs are joined together by a contact element which is welded to two inwardly projecting arms at the free ends of the legs, drawing the latter together to prestress the blade with a dish deformation. The two arms may be narrower than the legs, their common centerline being spaced from the contact zone of the contact, so that a twisting action is imparted to arms prior to separation of the contact from a fixed contact, assisting in breaking contact welds.

REFERENCES:
patent: 2805297 (1957-09-01), Campbell
patent: 3196233 (1965-07-01), Burch et al.
patent: 4118609 (1978-10-01), Schadow et al.

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