Flexible or portable closure – partition – or panel – Roll type – With guides or fabric edge holders
Patent
1997-10-01
1999-03-09
Johnson, Blair M.
Flexible or portable closure, partition, or panel
Roll type
With guides or fabric edge holders
160195, 1602681, A47H 300
Patent
active
058788034
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.
REFERENCES:
patent: 1784948 (1930-12-01), Rush
patent: 2322088 (1943-06-01), Black
patent: 2323612 (1943-07-01), Lombardi et al.
patent: 3092170 (1963-06-01), Ellis
patent: 4016920 (1977-04-01), Shepard
patent: 4718471 (1988-01-01), Kraeutler
patent: 4828003 (1989-05-01), Kraeutler
patent: 5072767 (1991-12-01), Kreautler
Comprehensive Dictionary of Engineering and Technology, p. 1185, (no date).
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