Switches

Details Switches Switches

1977-01-13

1980-03-18

Scott, James R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 83B, 200275, H01H 1370

Patent

active

041941055

ABSTRACT:
An electrical switch contact member consists of a resilient electrically conductive domed diaphragm of a predetermined shape. The diaphragm includes a frusto-conical region linking a central region of the diaphragm with a peripheral region. The frusto-conical region includes an inwardly turned or bent transition portion at its smaller end, and an outwardly turned transition portion at its larger end, and is dimensioned to function as a Belleville spring. The diaphragm may also comprise a plurality of co-axial similarly oriented frusto-conical regions each of which is inwardly turned at its smaller end, outwardly at its larger end, and which is also dimensioned to function as a Belleville spring.

REFERENCES:
patent: 1974779 (1934-09-01), Lupold et al.
patent: 2111168 (1938-03-01), Chansor
patent: 2381582 (1945-08-01), Erickson
patent: 2798130 (1957-07-01), Cox
patent: 3996429 (1976-12-01), Chu et al.
patent: 4029916 (1977-06-01), Chu

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