Multi-level load limiting retractor

Details Multi-level load limiting retractor Multi-level load limiting retractor

1998-08-04

1999-07-20

Jillions, JOhn M.

Winding, tensioning, or guiding

Reeling device

With spring motor

280805, B60R 2228

Patent

active

059246413

ABSTRACT:
An energy absorbing seat belt retractor having a frame; a spool on which the seat belt is wound, the spool rotationally supported relative to the frame; a first locking mechanism for initially stopping the spool from rotating in a belt protraction direction; a bias or rewind spring to retract the seat belt, and a first energy absorbing or dissipating member, associated with the first locking mechanism, for permitting the spool to rotate in the belt protracting direction subsequent to activation of the first locking mechanism for generating a reaction force to control the manner in which the spool rotates; wherein the first locking mechanism includes a mechanical inertial sensor for initiating the locking up of the first locking mechanism and wherein the retractor further includes a first non-inertial sensor (100, 200) for preventing the initiation caused by the inertial sensor.

REFERENCES:
patent: 3741494 (1973-06-01), Fiala
patent: 3881667 (1975-05-01), Tandetzke
patent: 5547143 (1996-08-01), Miller et al.
patent: 5788177 (1998-08-01), Keller et al.
patent: 5799893 (1998-09-01), Miller et al.

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