Safety belt retractor

Details Safety belt retractor Safety belt retractor

1978-07-21

1980-02-05

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

2421074A, A62B 3502, B65H 7548

Patent

active

041868951

ABSTRACT:
A device for rolling up a belt of a safety belt assembly for automobiles or the like of the kind employing a locking wheel on the reel spindle for the belt. The locking wheel is moved axially into engagement with a set of teeth on the housing to stop the reel spindle rotatably mounted in said housing. A locking member on the locking wheel first engages another set of teeth on the housing in response to accelerations of the belt in the withdrawal direction to bring the locking wheel to a stop in one of a limited number of known angular positions, whereupon it is moved axially to engage the first mentioned housing teeth with no risk of those teeth coming into tip-to-tip engagement. The locking member may be an inertia body and/or acted on by a separate inertia body, which may be a ring. The locking wheel may be in two parts, only one of which moves axially, and there may also be a locking responsive to accelerations of the automobile or the like which, using the two-part locking wheel, still allows the device to be mounted in an inclined attitude.

REFERENCES:
patent: 3851835 (1974-12-01), Fohl
patent: 4077585 (1978-03-01), Wiesbock

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