Mechanical shock reduction in pretensioners

Details Mechanical shock reduction in pretensioners Mechanical shock reduction in pretensioners

1996-07-18

1998-06-30

Rice, Kenneth R.

Land vehicles

Wheeled

Attachment

B60A 2236

Patent

active

057722463

ABSTRACT:
A pretensioner for a vehicle safety restraint comprises a cylindrical hollow tube, a piston member located within the tube and connected via a cable to a part of the vehicle safety restraint, and a pyrotechnic charge which is activated in the event of a collision to evolve a volume of gas within the tube to move the piston from one end of the tube to the other, wherein a pressure relief port is provided in the tube at a point along its length which is close to the end of the tube toward which the piston is moved on activation of the pyrotechnic charge.

REFERENCES:
patent: 5284307 (1994-02-01), Kotama
patent: 5364129 (1994-11-01), Collins et al.

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