Pretensioner in seat belt apparatus

Details Pretensioner in seat belt apparatus Pretensioner in seat belt apparatus

1990-09-04

1992-03-24

Stodola, Daniel P.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

B65H 7548

Patent

active

050980300

ABSTRACT:
A pretensioner for removing slack from a seat belt having a slack removing mechanism drive actuated in response to a detection signal indicative of a prescribed degree of deceleration of a vehicle, and pawl gears which, owing to a driving force produced by the drive, and meshed with a gear that co-rotates with a seat belt take-up reel, rotates the take-up reel in a direction that removes slack from the seat belt. When deceleration of a predetermined magnitude is sustained, as at the time of a collision, slack in the seat belt is removed reliably and the amount of tightening of the seat belt is substantially constant. As a result, the seat belt functions at maximum effectiveness to effectively restrain the passenger wearing the seat belt.

REFERENCES:
patent: 4455000 (1984-06-01), Nilsson
patent: 4597544 (1986-07-01), Fohl
patent: 4618108 (1986-10-01), Buterop et al.
patent: 4750685 (1988-06-01), Frei
patent: 4750686 (1988-06-01), Fohl
patent: 4925123 (1990-05-01), Frei et al.
patent: 4932603 (1990-06-01), Yamanoi et al.
patent: 4979694 (1990-12-01), Grabinski et al.
patent: 4991790 (1991-02-01), Fohl et al.
patent: 5004178 (1991-04-01), Kobayashi et al.

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