Vertically raisable curtain door

Details Vertically raisable curtain door Vertically raisable curtain door

E - Fixed Constructions

06

B

E06B 9/56 (2006.01)

Patent

CA 2043878

A goods-handling door comprises a raisable curtain 1 which folds concertina-like and which is stiffened by reinforcing bars 2 having rings 4 through which lifting straps 3 are passed, which straps are wound onto a top shaft 5 of a drive unit 6, 7. At the bottom of the curtain, a small additional piece of curtain is provided with a flexible reinforcing bar that is not connected to the lifting straps. The flexible reinforcing bar may be constituted by a coil spring, by a plastic extrusion, etc. It serves as a ballast, as a feeler bar, etc., while remaining flexible.

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