Pretensioner for a vehicle safety belt system

Details Pretensioner for a vehicle safety belt system Pretensioner for a vehicle safety belt system

1991-02-25

1992-11-03

Marmor, Charles A.

Land vehicles

Wheeled

Attachment

280807, 297480, B60R 2246

Patent

active

051601680

ABSTRACT:
A pretensioner for a vehicle safety belt system adapted to tighten a webbing that restrains a vehicle occupant by displacing an element of the belt system in a manner such as to tighten the webbing comprises, as the motive power source for displacing the element, a torsion coil spring having a base end portion fixed to the vehicle, a coil portion retained in guided relation to the vehicle, and an operating end portion associated with the element such as to impart a driving force to the element to cause it to displace upon release of energy stored in the coil spring. The element of the belt system displaced by the torsion coil spring may be a portion of the restraint webbing itself or of a webbing associated with the restraint webbing or a buckle by which the webbing is attached to the vehicle.

REFERENCES:
patent: 2043152 (1936-06-01), Cook
patent: 2701693 (1955-02-01), Nordmark et al.
patent: 3126072 (1964-03-01), Johansson
patent: 3405953 (1968-10-01), Karlsson
patent: 3606455 (1971-09-01), Carter
patent: 3758044 (1973-09-01), Nilsson
patent: 5039127 (1991-08-01), Fohl
Skole, Robert, "New Auto Safety Harness Shows Way to Set Standards", Product Engineering, Apr. 24, 1967, pp. 94-96.

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