Snap action switch

Details Snap action switch Snap action switch

1980-03-12

1981-07-14

Little, Willis

Electricity: circuit makers and breakers

Special application

Liquid or moisture responsive

200 64DA, 200275, H01N 1338

Patent

active

042788552

ABSTRACT:
A snap action switch has a Q-shaped blade having two spring arms terminating in outwardly projecting parallel end portions which are located in a slot in a contact element, these end portions being drawn together upon insertion into the slot, and thereby stressing the blade for snap action. The end portions are retained in the slot by the reaction forces due to the stressing of the blade, and made good electrical contact with the contact element. The blade end portions may be drawn together by a clip to which a contact is rivetted.
The contact element may alternatively be carried by a conductive arm separate from the blade and operable by the latter.

REFERENCES:
patent: 2701475 (1955-02-01), Readeker
patent: 2805297 (1957-09-01), Campbell
patent: 2806927 (1957-09-01), Allen
patent: 2892050 (1959-06-01), Fisher
patent: 3539742 (1970-11-01), Wilkes
patent: 4118610 (1978-10-01), Purssell et al.
patent: 4145587 (1979-03-01), Purssell
patent: 4163129 (1979-07-01), Rossi

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