Micro-miniature mercury tilt-type inertia switch

Details Micro-miniature mercury tilt-type inertia switch Micro-miniature mercury tilt-type inertia switch

1975-10-07

1976-11-23

Hohauser, Herman

Electricity: circuit makers and breakers

Liquid contact

Tiltable or rotatable

200 6147, H01H 2920

Patent

active

039938824

ABSTRACT:
A micro-miniature mercury tilt-type inertia switch which may be utilized in a light-emitting, solid state, digital-display watch to activate a digital read-out circuit by a "flick-of-the-wrist" motion. The switch is normally in a closed position, i.e., a globule of mercury contacts both electrodes, and a tilt force of approximately 1.4 G's is required to open the circuit. A movement of the switch back to 2.degree. or less below horizontal will reclose the circuit.

REFERENCES:
patent: 1805277 (1931-05-01), Cramblet
patent: 1933323 (1933-10-01), Fagan
patent: 1993045 (1935-03-01), Warnke
patent: 2130500 (1938-09-01), Lawson
patent: 3755643 (1973-08-01), Blair

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