Inertia switch

Details Inertia switch Inertia switch

1991-10-04

1993-03-16

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6152, 200DIG29, H01H 3514

Patent

active

051947072

ABSTRACT:
An inertia switch for sensing shock or vibrations imparted to an object to which said switch is secured. The switch comprises a pair of spaced-apart, electrically-conductive contact plates. Each plate has at least one cavity therein. The plates are held in fixed, spaced, parallel relationship to one another with the cavities facing and aligned with each other to constitute at least one opposed pair of cavities. A metal ball is loosely captive between the at least one opposed pair of cavities so that the ball, when in a condition of rest, establishes four conductive contact points, two with each of the plates.

REFERENCES:
patent: 1274670 (1918-08-01), Brackett
patent: 2892049 (1959-06-01), Rubinstein
patent: 2996586 (1961-08-01), Shindledecker et al.
patent: 3757266 (1973-09-01), Newman et al.
patent: 4185180 (1980-01-01), Anderson
patent: 4450326 (1984-05-01), Ledger
patent: 4467153 (1984-08-01), Jones et al.
patent: 4628160 (1986-12-01), Canevari
patent: 5030955 (1991-07-01), Durst et al.

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