Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1984-04-27
1985-05-21
Levy, Stuart S.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
2421074R, A62B 3502, B65H 7548
Patent
active
045181322
ABSTRACT:
A combination seat belt retractor particularly useful for motor vehicles is described. The seat belt retractor according to this invention converts between an emergency locking retractor which locks only when the vehicle is subjected to a deceleration level above a predetermined level to an automatic locking mode wherein the seat belt webbing cannot be withdrawn from the retractor. The convertible feature is particularly advantageous since an emergency locking retractor does not provide the desired firm positioning of child restraint systems. The emergency locking retractor, however, has advantages in terms of occupant comfort and convenience since they permit free movement of the occupants within the vehicle. In accordance with this invention, the retractor is converted to the automatic locking mode by first fully withdrawing the seat belt webbing therefrom. Such action causes a switching lever to force a leaf spring in a position against the retractor locking bar. When, however, a predetermined amount of seat belt webbing is returned upon the retractor spool, the leaf spring returns to its normal position, thereby restoring emergency locking operation to the retractor.
REFERENCES:
patent: 3862726 (1975-01-01), Ulrich et al.
patent: 4327882 (1982-05-01), Frankila et al.
patent: 4436255 (1984-03-01), Matsui et al.
General Safety Corporation
Jaekel Katherine
Levy Stuart S.
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