Fluid type inertia switch having resettable plunger and cone sha

Details Fluid type inertia switch having resettable plunger and cone sha Fluid type inertia switch having resettable plunger and cone sha

1976-07-06

1978-02-07

Scott, James R.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 615, 200 6152, 200194, 200209, 200210, 200220, H01H 3514, H01H 2920

Patent

active

040728358

ABSTRACT:
A resettable switch is disclosed having a conductor maintained in contact with a reservoir of mercury to conduct current therethrough during normal operation. During impact or roll over, the mercury is spilled from the reservoir and prevented from returning thereto by cone-shaped retainers maintained in a telescoped relation by a spring, thereby opening the switch. The switch may be reset by depressing a plunger which aligns slots in the telescoped retainers, which permits mercury to return to the reservoir.

REFERENCES:
patent: 1858191 (1932-05-01), Hadley et al.
patent: 2291236 (1942-07-01), Kilgour
patent: 2862073 (1958-11-01), Brutscher, Sr. et al.
patent: 3829639 (1974-08-01), Yauchler

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