Drive system for garage door

E - Fixed Constructions – 05 – F

Patent

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E05F 11/00 (2006.01)

Patent

CA 2519079

A drive system is provided for a moveable barrier, such as a garage door, that limits unauthorized shifting thereof. The drive system includes a flexible actuator for raising and lowering the door. The flexible actuator is tensioned with a biasing mechanism to minimize actuator throw, and a stop assembly of the biasing mechanism limits unauthorized travel of the garage door from the closed position by a predetermined amount that is sufficiently small so as to keep intruders out of the garage. The flexible actuator may for example, be a cable, a belt or a chain.

L'invention concerne un système d'entraînement destiné à une barrière mobile, telle qu'une porte de garage, et empêchant un mouvement non autorisé de celle-ci. Ce système d'entraînement comprend un actionneur souple destiné à lever et abaisser la porte. L'actionneur souple est soumis à une tension au moyen d'un mécanisme de sollicitation en vue d'une réduction de sa course, un ensemble butée du mécanisme de sollicitation limitant un déplacement non autorisé de la porte de garage à partir de la position fermée de sorte que l'ouverture de la porte soit trop petite pour permettre une intrusion dans le garage. Par exemple, l'actionneur souple peut être un câble, une courroie ou une chaîne.

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