Claims
- 1. A roller assembly for curtains and blinds, comprising a rod jacket on which the curtain is wound, a plate wheel fixed to the rod jacket and mounted on a fixed shaft, a plurality of plates arranged alternatively on the fixed shaft and the plate wheel, whereby every second plate of said plates is attached to the fixed shaft and the others are attached to the plate wheel, the plate wheel being mounted on the shaft so that the plate wheel is rotatable when being axially displaced relative to the shaft, a chain wheel mounted on the shaft and abutting the plate wheel, each of which wheel has a saw-tooth contact surface thereby forming a contact area therebetween whereby the plate wheel is axially displaced away from the abutting chain wheel against a spring when the chain wheel rotates, and whereby locking frictional action between the plates will be reduced or eliminated.
- 2. The roller assembly according to claim 1, wherein the plates have a recess for a locking pin, whereby the plates are unable to rotate relative to the shaft or the plate wheel to which they are respectively attached, but may be axially displaced.
- 3. The roller assembly according to claim 1, wherein the spring is arranged so as to press the plates together.
- 4. The roller assembly according to claim 1, wherein the strength of the spring and the number of plates are selected for various curtains of different weight and size.
- 5. The roller assembly according to claim 1, wherein chain runs around the chain wheel to control the height of the curtain.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8902868 |
Aug 1989 |
SEX |
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Parent Case Info
This application is a continuation-in-part of U.S. Ser. No. 07/835,994 filed Mar. 20, 1992, which is a completion of International Application PCT/SE90/00552 filed Aug. 29, 1990.
US Referenced Citations (4)
Foreign Referenced Citations (3)
Number |
Date |
Country |
1811746 |
Nov 1969 |
DEX |
9103619 |
Mar 1991 |
WOX |
9412758 |
Jun 1994 |
WOX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
835994 |
Mar 1992 |
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