Torque-adjusting device for use in a roller blind

Flexible or portable closure – partition – or panel – Roll type – With rotating means

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Details

A47G 502

Patent

active

044872453

ABSTRACT:
A torque-adjusting device for twisting and untwisting a spring-motor built in a roller assembly is equipped with an easily operatable handle ring. The device includes a brake drum secured to a mounting bracket, a coil spring fitted on the brake drum, an intermediate disk disposed between the coil spring and the handle ring. The intermediate disk is integrally coupled with a stator to which one end of the spring-motor is fixed. The handle ring has an inner tongue inserted between the opposite projecting ends of the coil spring in a slit in the periphery of the disk with the result that the coil spring permits a rotational transmission from the handle ring to the stator but suppresses the counter transmission.

REFERENCES:
patent: 2737235 (1956-03-01), Hediger
patent: 3260302 (1966-07-01), Griesser
patent: 3665996 (1972-05-01), Roberts
patent: 4112996 (1978-09-01), Fohl
patent: 4345636 (1982-08-01), Fukuchi

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