Importance

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Abstract

A goods-handling door for closing or opening a bay formed in a wall, said door comprising: a raisable curtain (3) capable of being collected together at the top of the door; a vertical slideway (5) on either side of the curtain, each slideway being suitable for receiving a respective side edge of the curtain and having a face placed against the wall at the edge of the bay, the side edges of the curtain being adapted to slide in said side vertical slideways to hold the curtain substantially in the plane of the door; and mechanical means for operating the door, the mechanical means comprising a shaft (4) disposed at the top of the door for winding up the curtain or curtain-raising straps, a motor (104) for driving said shaft, an end-of-stroke device (105), and control means (106), said door being characterized in that each slideway is fixed in position by disengageable means (9) to hold the slideway in the plane of the door during normal operation thereof while allowing the slideway to leave its location when sufficient force is exerted thereon.

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First Claim