Flexible or portable closure – partition – or panel – Roll type – With fabric free edge connected operator
Patent
1981-07-08
1983-06-28
Caun, Peter M.
Flexible or portable closure, partition, or panel
Roll type
With fabric free edge connected operator
A47H 100
Patent
active
043900542
ABSTRACT:
Apparatus for opening and closing a flexible screen in a greenhouse or the like includes a winding rod mounted for rotation about a fixed axis and to which an end edge of an elongated flexible screen is fixed, first driving apparatus for constantly applying a torque to the winding rod tending to rotate the same such that the flexible screen would be wound thereon, and traction apparatus including elongated flexible members, each of which has its two ends secured to a rotatably mounted driving shaft with respective end portions thereof oppositely coiled on the driving shaft and having two portions guided along a predetermined path of travel with one of the portions being operatively connected to the other end edge of the flexible screen, and second driving apparatus for selectively rotating the driving shaft in a normal or reverse direction.
REFERENCES:
patent: 1800654 (1931-04-01), Nelson
patent: 2193921 (1940-03-01), Gibbons
patent: 3180401 (1965-04-01), Gambon et al.
patent: 3421568 (1969-01-01), Youngs
patent: 3481073 (1969-12-01), Yoshda et al.
patent: 3510996 (1970-05-01), Popil
patent: 4064648 (1977-12-01), Cary
Ishihama Toshio
Niibori Kenji
Caun Peter M.
Seiwa Kagaku Kabushiki Kaisha
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