DETECTEUR D'OBSTACLE ET RIDEAU DE GARAGE

摘要

Device comprises a detector element (12) placed on the bottom of the roller door. The detector moves relative to the door when it comes into contact with an obstacle. In this way the effective weight of the door changes and a computer detects the change in weight when the load applied to the drive motor is less than a reference value. An Independent claim is made for a roller door with a detector element of the above type.