Pretensioner for vehicle safety restraint

Details Pretensioner for vehicle safety restraint Pretensioner for vehicle safety restraint

1997-08-07

1999-06-15

Rice, Kenneth R.

Land vehicles

Wheeled

Attachment

B60R 2236

Patent

active

059114401

ABSTRACT:
A pretensioner for a vehicle safety restraint having a cylindrical hollow tube and a piston connected via a cable to a part of the vehicle safety restraint for tightening the safety restraint in the event of a crash. The piston having a gas generator with gas vents directed with a component in the opposite direction to that of the piston movement for belt tightening. The piston also having locks and seals, the locks being operable only against the belt loosening direction, and wherein the gas generator is positioned forward of the locking mechanism in the direction of piston movement for belt tightening.
A more compact, cost effective pretensioner is possible.

REFERENCES:
patent: 4152025 (1979-05-01), Bendler et al.
patent: 4917210 (1990-04-01), Danicek et al.
patent: 5207618 (1993-05-01), Nishizawa
patent: 5310220 (1994-05-01), Fohl
patent: 5519997 (1996-05-01), Specht
patent: 5564748 (1996-10-01), Kmiec et al.

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