Electrically-operated roller door operating mechanism

Details Electrically-operated roller door operating mechanism Electrically-operated roller door operating mechanism

1980-11-04

1983-07-12

Staab, Lawrence J.

Machine element or mechanism

Alternate manual or power operators

49139, 160133, 160319, 160310, F16H 3500, E06B 908

Patent

active

043923925

ABSTRACT:
An electrically operated roller door driving mechanism for operating a roller door comprising a reversible electrical motor fixedly mounted to one of the roller door supporting drum wheels and housed within the core of the roller door curtain, the motor and drum wheel being arranged to rotate simultaneously, and a ring gear operatively associated with said motor via a reduction gear mechanism, the ring gear being capable of being held stationary with respect to the rotating drum wheel but also being capable of rotating in unison with the drum wheel to thereby enable the roller door to be manually opened and closed in the event of a motor malfunction or power failure.

REFERENCES:
patent: 2566946 (1951-09-01), Laze
patent: 3285089 (1966-11-01), Tsugawa

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