Wind-up mechanism for the elimination of belt looseness in a saf

Details Wind-up mechanism for the elimination of belt looseness in a saf Wind-up mechanism for the elimination of belt looseness in a saf

1979-02-01

1980-07-22

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

280807, A62B 3500, B65H 7548

Patent

active

042135818

ABSTRACT:
A wind-up mechanism for eliminating the belt looseness of a safety belt system when exceeding a predetermined deceleration, in which an ignitable propellant charge, provided for triggering the retraction movement of the belt is arranged centrally in the hollow shaft of a belt roller that blocks automatically in case of danger. A liquid medium is preferably disposed in front of the propellant charge which, after the ignition of the propellant charge, drives a rotor coupled at that instant with the wind-up roller so as to eliminate the belt looseness by the gases forming during the ignition of the propellant charge. The hollow shaft accommodates at one end a cap and a toothed rim connected therewith, into which engages a blocking mechanism triggered in case of danger, while at least a part of the rotor is formed-on at the other end of the shaft in the course of a cold-flow or casting operation.

REFERENCES:
patent: 3767135 (1971-07-01), Booth
patent: 4142692 (1979-03-01), Andres
patent: 4151967 (1979-05-01), Lindblad

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