Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1987-09-15
1988-08-30
Jillions, John M.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
2421074R, B60R 2240
Patent
active
047670827
ABSTRACT:
This invention relates to a seat belt retractor for a motor vehicle which can be operated in an emergency locking mode wherein belt retraction is prevented only upon vehicle deceleration, or in an automatic locking mode where the retractor operates as a one-way clutch to inhibit belt withdrawal. A mode switching mechanism is provided which causes the operating mode of the retractor to change when the seat belt webbing is either fully extended or fully retracted. The mode switching mechanism employs a rotating actuator ring gear having one or more tabs which engage an actuator lever which is caused to move between two positions. In one position of the actuator lever, the locking bar of the retractor is urged into engagement with the toothed sprockets of the retractor causing the retractor to operate in the automatic locking mode. In the other position of the actuator lever, biasing of the locking bar is relieved so that the retractor operates in the emergency locking mode. The design according to this invention provides wide flexibility in terms of packaging of the retractor and is easily modified to accomodate various lengths of seat belt webbing.
REFERENCES:
patent: 4008881 (1977-02-01), Ross
patent: 4143831 (1979-03-01), Cunningham
patent: 4436255 (1984-03-01), Matsui et al.
patent: 4518132 (1985-05-01), Schmidt
patent: 4552319 (1985-11-01), Gavagan et al.
patent: 4555075 (1985-11-01), Schmidt et al.
patent: 4566649 (1986-01-01), Peterson
patent: 4573646 (1986-03-01), Willey
patent: 4583701 (1986-04-01), Matsui et al.
patent: 4597546 (1986-07-01), Yamamoto et al.
Heintzleman Ronald A.
Schmidt Timothy J.
General Safety Corporation
Jillions John M.
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