E - Fixed Constructions – 05 – D
Patent
E - Fixed Constructions
05
D
E05D 13/00 (2006.01) E06B 9/60 (2006.01)
Patent
CA 2464461
A tensioning assembly for a door system, which includes an upwardly acting door supported by a frame and connected to a counterbalance system having a counterbalance spring, the tensioning assembly including a rotatable tension plate coupled to the counterbalance spring and rotatable relative to the counterbalance spring, the tension plate being selectively moveable between a disengaged position where the tension plate is freely rotatable and an engaged position where the tension plate is rotationally fixed to the frame; and a spring adapted to urge the tension plate toward the engaged position, whereby when in the disengaged position the tension plate is rotatable to adjust tension in the counterbalance spring and the tension plate is returned to the engaged position to maintain the tension.
L'invention concerne un tendeur destiné à un système de porte comprenant une porte à mouvement vertical reposant sur une structure, reliée à un système de contrepoids équipé d'un ressort. Le tendeur comprend une plaque de tension rotative reliée au ressort, pouvant tourner par rapport au ressort. La plaque de tension peut passer, de manière sélective, d'une position désenclenchée, dans laquelle la plaque de tension peut tourner librement, à une position enclenchée, dans laquelle la plaque de tension est fixée de façon rotative sur la structure. Le ressort est conçu pour pousser la plaque de tension vers la position enclenchée. Lorsque elle est en position désenclenchée, la plaque de tension tourne pour régler la tension dans le ressort et revient vers la position enclenchée pour maintenir la tension.
Gowling Lafleur Henderson Llp
Wayne-Dalton Corp.
LandOfFree
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