Combination blind controller
Patent 5671793 Issued on September 30, 1997. Estimated Expiration Date: 
May 15, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 15, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2759535 3129750 3443624 3633646 Venetian blind with wand operator Window blind with wand operator Cord locking assembly for use with venetian blind Safety device for pull cords of window coverings Blind apparatus Cord retractor for window blinds Patent #: 5553653 InventorAssigneeApplicationNo. 648326 filed on 05/15/1996US Classes:160/168.1RWith accumulating meansExaminersPrimary: Purol, David M.International ClassE06B 009/30AbstractAn improved controller for opening and closing a venetian blind vanes over a door or window opening. A pull cord is engaged with a pulley, which is moved with a loop cord selectively engaged with a cord lock attached to a handle. A rotatable switch in the cord lock is rotated, the cord lock grasps the loop cord, and the handle is moved downwardly to pull to loop cord. Such movement operates the pulley and pull cord to raise the blind vanes. When the cord lock is disengaged, the weight of the blind returns the components to the original position. A rotatable tilt switch or combination of rotatable tilt switches are attached to a tilt rod for selectively rotating the blind vanes. All cords are completely enclosed so that looped ends of the cords are not accessible to persons adjacent the window blind. | |
