Combination arming/discriminating inertia switch

Details Combination arming/discriminating inertia switch Combination arming/discriminating inertia switch

1990-08-27

1991-10-22

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6148, 280735, 307121, H01H 3514, B60R 2132

Patent

active

050597515

ABSTRACT:
The switch assembly comprises a single inertial sensing mass which is magnetically biased to an initial position along a path of travel within an enclosure. In this position, the mass holds a normally closed arming switch open. A normally open discriminating switch is disposed in the path of travel of the mass to be closed by the mass upon the occurrence of a velocity change indicating that a passive occupant restraint device such as an air bag should be deployed. Travel of the mass from the initial position releases the arming switch before the discriminating switch closes.

REFERENCES:
patent: 3489917 (1970-01-01), Gurol
patent: 3639710 (1972-02-01), Haruna et al.
patent: 3762494 (1973-10-01), Peters
patent: 3778572 (1973-12-01), Matsui et al.
patent: 3780314 (1973-12-01), Inose et al.
patent: 3840088 (1974-10-01), Marumo et al.
patent: 3848695 (1974-11-01), Lacaze, Jr.
patent: 3859482 (1975-01-01), Matsui
patent: 3889130 (1975-06-01), Breed
patent: 4097699 (1978-06-01), Larson

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