Continuous cord roll up blind

Details Continuous cord roll up blind Continuous cord roll up blind

1989-08-31

1990-09-11

Purol, David M.

Flexible or portable closure, partition, or panel

Roll type

Shiftable position roll

160170, A47H 100

Patent

active

049554212

ABSTRACT:
This invention relates to a continuous cord roll up window blind. This continuous cord roll up window blind has an endless cord that engages and causes a sprocket to rotate. The sprocket in turn causes a take up spool to rotate. When the take up spool rotates, a take up cord, which is wrapped around the window covering material, either wraps around or unwraps from the take up spool, depending upon which way the take up spool is rotated. This in turn causes the take up cord to raise or lower the window covering material. A take up cord guide is positioned by the take up cord and, when the window blind is completely rolled down, limits the direction in which the endless cord can be pulled to require that the window blind be rolled up toward the interior surface of the window blind.

REFERENCES:
patent: 4603725 (1986-08-01), Knight

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