Tension reducer

Details Tension reducer Tension reducer

1991-03-26

1993-03-23

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

B60R 2244

Patent

active

051956934

ABSTRACT:
Disclosed herein is a tension reducer suitable for use in a webbing retractor, which comprises a weak resilient spiral spring whose one end is connected to a webbing take-up spindle of the webbing retractor and which exerts an urging force in a webbing winding direction, a connecting member connected to the other end of the weak resilient spiral spring and disposed rotatably about the take-up spindle, a strong resilient spiral spring whose one end is connected to the connecting member and which exerts an urging force in the webbing winding direction greater than the urging force of the weak resilient spiral spring, a device for stopping the rotation of the connecting member in the webbing winding direction so as to avoid the exertion of the urging force of the strong resilient spiral spring on a webbing at the time that the webbing is pulled out of the take-up spindle to be fastened to an occupant, and a device disposed about the take-up spindle for controlling the degree of tightening of the windings of the weak resilient spiral spring so as to prevent the torque thereof from exceeding a predetermined range.

REFERENCES:
patent: 4113201 (1978-09-01), Ziv
patent: 4913372 (1990-04-01), Takada
patent: 4943011 (1990-07-01), Kitamura et al.
patent: 4993657 (1991-02-01), Brown

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