Electricity: circuit makers and breakers – Special application – Liquid or moisture responsive
Patent
1980-10-14
1982-06-22
Shepperd, John W.
Electricity: circuit makers and breakers
Special application
Liquid or moisture responsive
200283, 200339, H01H 518
Patent
active
043364292
ABSTRACT:
A snap-action switch unit uses as its movable element a spring strip (23) mounted in a frame (20) such that the strip is bowed. A rod or the like (22) across the strip at its middle constrains the strip so that one half is bowed away from a flat surface (21) while the other half is adjacent to and roughly parallel with the flat surface.
REFERENCES:
patent: 1215665 (1917-02-01), Landis
patent: 2444529 (1948-07-01), Puster
patent: 2523786 (1950-09-01), Soreng
patent: 2755352 (1956-07-01), Birkemeler
patent: 2923787 (1960-02-01), Nelson
patent: 3582584 (1971-06-01), Best
patent: 4191867 (1980-03-01), Feaster
Amphlett Stephen L.
Hodges Robert J.
Jackson Thomas M.
IT&T Industries, Inc.
Michals William J.
Raden James B.
Shepperd John W.
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