Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1985-11-14
1987-08-04
Levy, Stuart S.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
2421074A, A62B 3502, A65H 7548
Patent
active
046840770
ABSTRACT:
In a seat belt retractor winding prevention mechanism, the winding prevention pawl is mounted upon a collapsible support mechanism which is collapsed by an inertia sensor at the onset of a sensed vehicle deceleration condition. The collapsible support mechanism carries a cam which engages the pawl upon collapse and moves the pawl axially out of engagement with the ratchet teeth carried by the reel to thereby release the winding prevention mechanism so that the windup spring will rewind the belt to a taut condition about the occupant. The inertia sensor raises a pilot pawl into engagement with gear teeth carried by the reel so that reel rotation energizes a further movement of the pilot pawl and the pilot pawl movement both collapses the collapsible support mechanism of the winding prevention pawl and also moves a lock bar into engagement with the reel to lock the reel against belt unwinding rotation.
REFERENCES:
patent: 3869098 (1975-03-01), Sprecher
patent: 3973786 (1976-08-01), Rogers, Jr.
patent: 4002311 (1977-01-01), Fisher
patent: 4153274 (1979-05-01), Rogers
patent: 4285479 (1981-08-01), Blom
patent: 4386745 (1983-06-01), Patel
patent: 4540137 (1985-09-01), Rogers
patent: 4564155 (1986-01-01), Tsukamoto
Brender David T.
Ches Gregory S.
Kurtti Gary R.
Senopole John J.
General Motors Corporation
Leahy Charles E.
Levy Stuart S.
Matecki Katherine
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