Inertial switch

Details Inertial switch Inertial switch

1963-10-18

1977-03-15

Farley, Richard A.

Electricity: circuit makers and breakers

Special application

Frangible or destructible type

200 6145R, H01H 3514

Patent

active

040126137

ABSTRACT:
1. An inertial switch comprising a cylinder, a cap secured to one end of d cylinder, said cap having a central bore therethrough running parallel to said cylinder and a transverse hole communicating with said bore a wire inserted in the hole in said cap; a shearing member mounted in the bore, having a hole in which said wire is inserted and having a portion extending into the interior of said cylinder; a coil spring located within said cylinder having one end contacting said cap; a base secured to the other end of said cylinder; and a piston contacting said spring and base and having an elongated central portion; said spring being relatively long compared to the length required to stop the elongated portion of said piston from striking the portion of said shearing member extending into the interior of said cylinder when the switch is dropped from a distance of 40 feet onto a steel plate, whereby said wire is broken only when a predetermined sufficient energy is imparted to said spring.

REFERENCES:
patent: 1189403 (1916-07-01), Struble et al.
patent: 1768678 (1930-07-01), Froelich
patent: 2873680 (1959-02-01), Severance
patent: 3003045 (1961-10-01), Tichenor
patent: 3038042 (1962-06-01), Hall et al.
patent: 3075465 (1963-01-01), Craig
patent: 3086468 (1963-04-01), Mountjoy et al.

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