Flexible or portable closure – partition – or panel – Hanging or drape type – Motor operating means or electric or fluid pressure control
Patent
1987-12-24
1988-09-13
Britts, Ramon S.
Flexible or portable closure, partition, or panel
Hanging or drape type
Motor operating means or electric or fluid pressure control
160126, 1603491, A47H 502
Patent
active
047702249
ABSTRACT:
A power operated industrial door to enclose a doorway in a building. The door comprises a pair of flexible curtains, one vertical side edge of each curtain being secured to the building adjacent the doorway, while the upper horizontal edge of each curtain is attached to a plurality of trolleys that are mounted for movement on tracks disposed above the doorway. One trolley associated with each curtain is secured to an endless drive cable, while the remaining trolleys are freely mounted on the cable so that operation of the cable will move the curtain between open and closed overlapping positions. The upper edge of each curtain is connected to the trolley in a manner such that the curtain will be uniformly folded when moved to the closed position. Weights, in the form of metal shot, can be positioned in elongated pockets along the movable vertical side edge of each curtain, as well as at the bottom of the curtain to aid in resisting wind loads.
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Skjutport typ PT-20, Portteknik, Sweden (Along with English Translation).
Britts Ramon S.
Kelley Company Inc.
Purol David M.
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