Electricity: circuit makers and breakers – Special application – Change of inclination or of rate of motion responsive
Patent
1979-05-09
1981-08-18
Truhe, J. V.
Electricity: circuit makers and breakers
Special application
Change of inclination or of rate of motion responsive
200 6145R, 280735, H01H 3514, B60R 2108
Patent
active
042848636
ABSTRACT:
A velocity change sensor adapted for mounting on a vehicle equipped with a passenger protective device, such as an inflatable air bag, comprises a body fitted with a normally open electrical switch connected to the passenger protective device's operating mechanism and adapted to be closed by a sensing mass upon movement of such sensing mass a predetermined distance in response to acceleration of the vehicle above a predetermined threshold. The sensing mass is biased to a normally inactive, initial position under a force which establishes the acceleration threshold. A biasing mass engages the sensing mass when the latter is in its initial position but moves out of engagement with the sensing mass in response to acceleration of the vehicle above the threshold level to permit movement of the sensing mass from its initial position toward its passenger protective device operating position. Movement of the biasing mass is damped to prevent rebounding of the biasing mass and consequent interference with movement of the sensing mass. Movement of the sensing mass also is damped to prevent operation of the passenger protective device except in those instances in which the acceleration and duration thereof are of such magnitude as to require operation of the protective device.
REFERENCES:
patent: 3974350 (1976-08-01), Breed
Breed Corporation
Moose Richard M.
Truhe J. V.
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