BRAKING SYSTEM FOR POWERED WINDOW COVERING

• Main Authors: WALKER, WINSTON G, SCHARF, RICH, SCHMELING, DAVID J
• Format: Patent
• Language: English; French
• Published: 23.11.2004
• Edition: 7
• Subjects: CHECKS FOR WINGS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; FIXED CONSTRUCTIONS; FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES; GENERATION; KEYS; LADDERS; LOCKS; SAFES; WINDOW OR DOOR FITTINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING

Small permanent magnets are affixed to the protruding portion of a rotor of a motor that is coupled to gears in a gear enclosure. The rod of a window covering, is coupled to the gears such that when the motor is energized by a user command signal, the window covering moves. Small braking magnets are also affixed to the receptacle of the gear enclosure, such that when the motor is deenergized, the magnetic coupli ng between the magnets of the rotor and those of the gear enclosure brakes the rod from turning under the weight of the window covering.