Linear drive for vehicle restraining systems

Details Linear drive for vehicle restraining systems Linear drive for vehicle restraining systems

1993-02-24

1994-09-27

Tyson, Karin L.

Land vehicles

Wheeled

Attachment

280806, 297480, B60R 2246

Patent

active

053501942

ABSTRACT:
In a linear drive for belt pretensioner in vehicle restraining systems a piston/cylinder unit (10) is used, the piston of which is subjected to pressure by the gases generated by a pyrotechnical gas generator (26). A pulling cable (12) is connected to the piston (24), said connection not being direct but with interposition of a damping means (32) which in the phase of the pressure rise of the gases limits the force exerted on the pulling cable (12) and allows said force to increase smoothly and is effective during a substantial fraction of the initial phase of the piston movement in which the gas pressure (D) generated by the generator (26) rises.

REFERENCES:
patent: 3917031 (1975-11-01), Doin et al.
patent: 4201418 (1980-05-01), Reidelbach
patent: 4258934 (1981-03-01), Tsuge et al.
patent: 4328976 (1982-05-01), Tsuge et al.
patent: 4423846 (1984-01-01), Fohl
patent: 4441738 (1984-04-01), Tsuge et al.
patent: 4449443 (1984-05-01), Fohl
patent: 5129679 (1992-07-01), Specht

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