Winding spring for seat belt winding apparatus

Details Winding spring for seat belt winding apparatus Winding spring for seat belt winding apparatus

1979-09-26

1981-03-03

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

185 37, 267156, A62B 3500, B65H 7548

Patent

active

042536200

ABSTRACT:
There is provided a winding spring for a seat belt winding apparatus which comprises an output drum and a take-up drum. The winding spring is stretched in the S-shaped form between the output drum and take-up drum. In the normal use region of the entire length of the winding spring, the natural radius of curvature of the spring is gradually increased. In the surplus use region of the spring, the natural radius of curvature of the spring is divided into a part where it is gradually decreased and a part where it is kept constant. The natural radius of curvature in the free end portion of the winding spring is increased.

REFERENCES:
patent: 2647743 (1953-08-01), Cook
patent: 3337155 (1967-08-01), Binding
patent: 3363891 (1968-01-01), Foster
patent: 3788631 (1974-01-01), Aldous
patent: 4084764 (1978-04-01), Mogerlein

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