Seat belt comfort mechanism

Details Seat belt comfort mechanism Seat belt comfort mechanism

1990-07-24

1992-07-21

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

B60R 2244

Patent

active

051315947

ABSTRACT:
A seat belt retractor includes a mechanism for reducing the tension in the seat belt webbing. The retractor also includes a rewind spring which biases a retractor spool to wind the webbing onto the spool. The tension reducing mechanism comprises a comfort spring which is selectively engaged to counteract the biasing force of the rewind spring. The counteracting force of the comfort spring is applied throughout any range of movement of the vehicle occupant with the webbing fastened around the occupant. The amount of the counteracting force may be varied by the occupant. The comfort spring is engaged to oppose the rewind spring throughout winding up and unwinding of any length of webbing which is wound onto the retractor spool after the webbing is fastened around the occupant. The counteracting force of the comfort spring is proportional to the length of webbing wound onto the retractor spool while the webbing is fastened around the occupant.

REFERENCES:
patent: 4026494 (1977-05-01), Tanaka
patent: 4084764 (1978-04-01), Mogerlein et al.
patent: 4108393 (1978-08-01), Henderson
patent: 4125231 (1978-11-01), Henderson
patent: 4183476 (1980-01-01), Fohl
patent: 4216922 (1980-08-01), Weman
patent: 4228968 (1980-10-01), Jahn
patent: 4310128 (1982-01-01), Morita et al.
patent: 4534520 (1985-08-01), Yanagihara

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