Seat belt retractor assembly with pawl mounted pendulum

Details Seat belt retractor assembly with pawl mounted pendulum Seat belt retractor assembly with pawl mounted pendulum

1980-10-06

1983-02-01

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

A62B 3502, B65H 7548

Patent

active

043711286

ABSTRACT:
An emergency spool release for use with a seat belt retractor mechanism is shown wherein the seat belt mechanism includes a spool for storing a belt which restrains the passenger of a vehicle during an emergency. The belt is urged into a retracted position by spring means while the protracted position of the belt is restrained in an emergency by the automatic engagement of a locking pawl against ratchet teeth found on the periphery of the spool. The automatic engagement is accomplished by a unique inertia locking system which uses two sets of pawls and two ratchets. The first locking pawl mounts a second pawl which is placed in motion by an inertia mass also mounted upon the first pawl. The second pawl engages a second set of ratchet teeth which pull the second pawl and thus the first pawl into engagement with the first set of ratchet teeth to lock the spool.

REFERENCES:
patent: 3834646 (1974-09-01), Heath
patent: 3923269 (1975-12-01), Kell
patent: 3946965 (1976-03-01), Singh
patent: 4046332 (1977-09-01), Wheeler et al.
patent: 4162773 (1979-07-01), Wallin

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