Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1979-03-26
1980-10-21
Jillions, John M.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
A62B 3500, B65H 7548
Patent
active
042289718
ABSTRACT:
A seat belt retractor with a tension eliminating mechanism comprises a reel on which a webbing is wound up when the reel rotates in one direction, first biasing means biasing the reel to rotate in the one direction, a ratchet wheel journaled on a concentric bearing portion formed on the reel, a toothed stopper arm for stopping rotation of the ratchet wheel when engaged with the same, second biasing means to bias the stopper arm to move in a direction to be disengaged from the ratchet wheel, an external gear journaled on an eccentric bearing portion formed on the reel, third biasing means to bias the ratchet wheel to rotate in the same direction as the one direction relative to the external gear, an internal gear stationarily mounted to the retractor and operatively engaged with the external gear, at least one stud fixed to the external gear, at least one arcuate slot formed in the ratchet wheel to be concentric with the same for spacedly receiving therein the stud, the stud and the slot being so arranged and formed that when the stud is in contact with one longitudinal end of the slot upon engagement of the toothed stopper arm with the ratchet wheel, the external gear becomes fixed so as to be prevented from rotation relative to the internal gear, and an electromagnet for bringing the toothed stopper arm into engagement with the ratchet wheel in response to buckling of the webbing by the passenger.
REFERENCES:
patent: 3908928 (1975-09-01), Okada
patent: 3912035 (1975-10-01), Ulert
patent: 4108395 (1978-08-01), Heath
patent: 4124175 (1978-11-01), Cislak
Arima Tatsuhiro
Yamanashi Chusaku
Fuji Kiko Company Limited
Jillions John M.
Nissan Motor Company Limited
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