Shock detecting system

Details Shock detecting system Shock detecting system

1994-01-07

1995-08-08

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6145M, 200 6153, 335205, H01H 3514

Patent

active

054400848

ABSTRACT:
A shock sensor including a switch turned on by magnetic force. The switch includes a reed switch, a magnet sliding back and forth along a case for the reed switch, and a coil spring biasing the magnet in a particular direction. When the sensor receives a shock, the biased magnet moves along the switch case, the magnetic force applied to the reed switch increases and when this magnetic force exceeds a predetermined amount, contact portions of the reed switch are closed and the switch is in the on state. Further, a weight forming an integral part of the magnet is used to increase the kinetic energy of the magnet or, between the coil spring and the switch case, there is a slack which enables movement of the coil spring in the direction of its diameter, either structure allowing the magnet to stay in the on state longer than a conventional switch.

REFERENCES:
patent: 3622926 (1971-11-01), Risk
patent: 3795780 (1974-03-01), Lawrie
patent: 4705922 (1987-11-01), Seeger et al.
patent: 4877927 (1989-10-01), Reneau
patent: 4980526 (1990-12-01), Reneau
patent: 4987276 (1991-01-01), Bader et al.
patent: 5212357 (1993-05-01), Reneau
patent: 5283402 (1994-02-01), Green

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