Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 23, 2010
Patent Application Number
11972859
Date Filed
January 11, 2008
Patent Citations Received
Patent Primary Examiner
Patent 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.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.