Rolling shutter system

Details Rolling shutter system Rolling shutter system

1985-08-07

1992-06-02

Purol, David M.

Flexible or portable closure, partition, or panel

Roll type

With brake or stop

160321, E06B 900

Patent

active

051178931

ABSTRACT:
A rolling shutter system employs a variable efficiency bi-directional drive mechanism which permits easy and quick raising of the rolling shutter while protecting against self-lowering of the shutter by reason of its own weight. The system also employs a novel operator for the bi-directional drive mechanism which is characterized by an easy and comfortable to grip bead string which also is attractive in appearance. The bead string is trained about a sprocket wheel, and an overload slip clutch is provided between the sprocket wheel and worm gear drive to limit the amount of force that can be applied to the bead string during raising and lowering of the rolling shutter. Also provided is a novel shutter travel limit and locking device, a novel valance construction and a novel through the wall shaft assembly.

REFERENCES:
patent: 1262643 (1918-04-01), Coleman
patent: 1784948 (1930-12-01), Rush
patent: 1947070 (1934-02-01), Traut
patent: 2577046 (1951-12-01), Svirsky
patent: 2894578 (1959-07-01), Caesar
patent: 2921628 (1960-01-01), Alvarez
patent: 3158195 (1964-11-01), Ney
patent: 3640332 (1972-02-01), Luby
patent: 3840061 (1974-08-01), Herms
patent: 3970134 (1976-07-01), Sinnock
patent: 4131039 (1978-12-01), Garconnet
patent: 4197896 (1980-04-01), Reichstadt
patent: 4399855 (1983-08-01), Volfson
patent: 4422493 (1983-12-01), Forquer
patent: 4424852 (1984-01-01), Hopper
patent: 4436136 (1984-03-01), Downey
patent: 4503899 (1985-03-01), Forquer

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