Hunter Douglas,inc.

Stephen M Winters

Stephen P Smith

Kent A Smith

Kenneth M Faller

Galen B Rhodes

Max W Schroeder

William S Certain

Steven P Smith

A cordless retractable shade including an operating system for the shade that varies a biasing force of a spring to counterbalance the shade. The bottom rail of a retractable shade can be raised or lowered, and due to the operating system remains in any selected position of the covering between fully extended and fully retracted, without the use of operating cords. The system includes a method of negating and reversing the spring bias effect at a strategic position whereby the flexible vanes of the shade can be adjusted between open and closed.

Cordless retractable roller shade for window coverings

A covering for an architectural opening is provided. The covering may include an accumulator roller, a shade attached to the accumulator roller, and a shade actuation system. The shade may be wrappable about the roller. The shade may include two laterally-separable sheets interconnected by a plurality of vertically-spaced vanes. The shade actuation system may be selectively engageable with a confronting face of one of the two laterally-separable sheets. Engagement of the shade actuation system and the one of the two laterally-separable sheets may restrict movement of the one of the two laterally-separable sheets relative to the other of the two laterally-separable sheets.

Covering for an architectural opening

Growing community of inventors

Erie, CO, United States of America

Stephen M Winters