Seat belt pretensioner

Details Seat belt pretensioner Seat belt pretensioner

1993-09-10

1995-03-14

Stodola, Daniel P.

Winding, tensioning, or guiding

Reeling device

With spring motor

B65H 7548

Patent

active

053970756

ABSTRACT:
A pretensioner for a seat belt utilizes a relatively inexpensive gas-producing cartridge that is easily replaced after activation so as to condition the pretensioner for subsequent use. The cartridge is similar to a shotgun shell and is chambered in a breech block. The cartridge contains a gas-producing pyrotechnic and a piston. Upon ignition, gas produced by the pyrotechnic effects advancement of the piston which, through an associated mechanism, takes up slack in the seat belt.

REFERENCES:
patent: 4434953 (1984-03-01), Gemar et al.
patent: 4508287 (1985-04-01), Nilsson

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