Roller assembly for curtains and the like

Details Roller assembly for curtains and the like Roller assembly for curtains and the like

1993-12-20

1996-02-06

Purol, David M.

Flexible or portable closure, partition, or panel

Roll type

With brake or stop

160319, E06B 920

Patent

active

054889839

ABSTRACT:
A roller assembly for curtains and the like includes a rod jacket (1) on which the curtain is wound, a plate wheel (5) , a fixed shaft (2) , a chain wheel (3) , plates (6) and a spring (7). The plate wheel (5) is mounted on the shaft (2) so as to enable it both to rotate and to be axially displaced relative to the shaft. Every second plate (6) is attached to the fixed shaft (2) and the others to the plate wheel (5). Furthermore, the plates (6) operate in such a way that they cannot rotate relative to the part to which they are attached, but can be axially displaced. The curtain is fixed by the spring (7) pressing the plate wheel (5) leftwards. The plates (6) lock the plate wheel (5) at the fixed shaft (2) because of the frictional action. When the height of the curtain is to be changed the chain wheel (3) is rotated in relation to the plate wheel (5). The plate wheel (5) is moved rightwards, because the contact area between the chain wheel (3) and the plate wheel (5) is saw-toothed. When the plate wheel (5) is moved rightwards against the action of the spring (7), the plates (6) will be moved apart to release friction force between them, whereby the height of the curtain can easily be changed.

REFERENCES:
patent: 1321674 (1919-11-01), Sheppard
patent: 4323105 (1982-04-01), Berman et al.
patent: 4534396 (1985-08-01), Jung
patent: 5029629 (1991-07-01), Cheng-Pei

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