Controlling a position of a flexible covering

Details Controlling a position of a flexible covering Controlling a position of a flexible covering

2008-01-11

2010-02-23

Mitchell, Katherine W (Department: 3634)

Flexible or portable closure, partition, or panel

Roll type

C160S291000, C160S309000

Reexamination Certificate

active

07665505

ABSTRACT:
A control apparatus for positioning and counterbalancing an amount of flexible blind material wound onto or unwound from a rotatable shaft of a windable covering such as a blind. The apparatus includes a main body and a variable torque device, at least partially fitted within the main body, having means of achieving a variable torque to prevent rotation of the shaft due to a variable weight of blind material hanging from the shaft in any position between a wound position and an unwound position of the blind material defining full travel of the windable covering.

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