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US 5,307,859 AGranted
Goods-handling door reduced surface abrasion
AssigneeNergeco (societe anonyme)
InventorBernard Kraeutler
Life of this patent
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Abstract
A goods-handling door having a retractable curtain includes a flexible curtain that is rollable or foldable by use of a rotary winding shaft. In the door, the curtain is provided, on at least one face, with at least one flexible strip extending perpendicular to the shaft and forming excess thickness on the curtain. When the curtain is rolled or folded in its retracted position, the separation strip rolls or folds onto itself to hold the layers of the curtain apart from one another.
Claims6
A goods-handling door having a retractable curtain, the door comprising:
- a flexible curtain that is rollable or foldable by means of a rotary winding shaft,
- wherein said curtain includes on at least one face of said curtain at least one flexible strip extending perpendicularly to the shaft and
- wherein said flexible strip provides excess thickness on the curtain to thereby define a separation strip such that when the curtain is rolled or folded, said strip rolls or folds onto itself, said flexible strip holds the layers of the curtain apart from one another when the curtain is in a retracted position.
Dependencies are inferred from the claim text.