Title: Gas damped vehicular crash sensor with gas being dominant biasing force on sensor

Abstract: A sensor for sensing deceleration of a vehicle and actuating a passenger protective device comprises a sealed, gas filled housing containing a cylinder and a piston within the cylinder movable in response to deceleration of the vehicle. A clearance between the piston and the cylinder is so selected that the movement of the piston is damped by the gas. The gas flow is viscous resulting in a sensor responsive to a constant velocity change of the vehicle above a prescribed threshold, regardless of the shape or duration of the crash pulse.

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Inventors: Breed, David S. (Boonton, NJ, US)

Application Number: 491291
Filing Date: 1974-07-24
Publication_date: 1976-08-10
Assignee: Breed Corporation (Fairfield, NJ)
Primary Class(es): 200/61.53 102/262, 102/274, 180/282
Other Classes:
US Patent Ref:

2243621	May, 1941	Denoix	102/705.
2801589	Aug, 1957	Meek et al.	102/78.
2921999	Jan, 1960	Ziegle, Jr.	200/61.
3508019	Apr, 1970	Crockett	200/61.
3602049	Aug, 1971	Albert	200/61.
3703866	Jan, 1972	Semenza	102/705.
3715535	Feb, 1973	Vrenda	200/61.
3771457	Nov, 1973	Buxton	200/61.
3793498	Feb, 1974	Matsui et al.	200/61.
3859483	Jan, 1975	Laserson et al.	200/61.
3889130	Jun, 1975	Breed	200/61.

Other Refs:
Primary Examiner: Scott, James R.
Assistant Examiner:
Attorney: