Retractor having a single sided energy absorbing spool

Details Retractor having a single sided energy absorbing spool Retractor having a single sided energy absorbing spool

1996-04-29

1997-03-25

Jillions, John M.

Winding, tensioning, or guiding

Reeling device

With spring motor

2423791, B60R 2228

Patent

active

056136471

ABSTRACT:
An energy absorbing seat belt retractor comprising: a frame (22); a spool (24) rotatably mounted relatively to the spool including a lock wheel (71) having a plurality of lock teeth associated therewith and adapted to receive a seat belt thereabout; a lock pawl (77) for engaging the spool upon sensing a one of a vehicle deceleration and seat belt extraction above certain determinable levels; and movable nut (90)located in the spool and for prohibiting relative movement between the lock wheel and spool below a threshold input force level generated in part by occupant load on the seat belt and for generating a controlled energy dissipating reaction force on the seat belt after the input force exceeds the threshold level to permit a controlled rotation of the spool and the controlled pay out of the seat belt from the spool.

REFERENCES:
patent: 3442466 (1969-05-01), Fritsche
patent: 3790099 (1974-02-01), Beller
patent: 3881667 (1975-05-01), Tandetzke
patent: 3927846 (1975-12-01), Meissner
patent: 3952967 (1976-04-01), Barile et al.
patent: 3961761 (1976-06-01), Wiesbock
patent: 4158403 (1979-06-01), Peter
patent: 4254921 (1981-03-01), Adomeit
patent: 4323205 (1982-04-01), Tsuge et al.
patent: 4385736 (1983-05-01), Yamamoto
patent: 5014927 (1991-05-01), Ogawa et al.

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