Patent ID: 6598650
Filing Date: 2003-07-29
Classification: B29C,B29K,B29L,E06B

Abstract:
A rigid vane for a door or window covering, the door or window covering including a plurality of such vanes, each of the plurality of vanes being movable between a light passing first position and a light blocking second position, the rigid vane comprising an elongate vane shell including a polymer at least partially enveloping a plurality of fibers, the vane shell having an inner surface and an outer surface, and a space within the vane shell and defined by the inner surface, each vane shell having a rounded edge extending along the length thereof and a thin edge extending along the length thereof and remote from the rounded edge thereby defining an airfoil shape in transverse cross-section that facilitates the passage of light when the vane is in the first position and inhibits the passage of light when the vane is in the second position.