Methods for operating window covers
A window cover system includes an extendible window cover that has a pair of lift cords. A lift cord pulley shaft is coupled to a pair of spaced apart lift pulleys. A spring drive unit is constructed of a beveled gear system with a first gear that is spring biased to resist rotation of the first gea...
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| creator | TOTI ANDREW J |
| description | A window cover system includes an extendible window cover that has a pair of lift cords. A lift cord pulley shaft is coupled to a pair of spaced apart lift pulleys. A spring drive unit is constructed of a beveled gear system with a first gear that is spring biased to resist rotation of the first gear in one direction of rotation, and a second gear meshed with the first gear. The lift cord pulley shaft is operably coupled to the second gear and is configured to rotate therewith. The spring drive unit has a single output and no input, and the single output is coupled to the first gear. |
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| subjects | DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL FIXED CONSTRUCTIONS FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LADDERS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS |
| title | Methods for operating window covers |
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