Electrically driven, horizontally guided roll-up door for opening or closing e.g. attic entrance in dwelling, has roll-up door body reciprocated back and forth along pair of end rails by electric motor

摘要

An aluminum roll-up door body (3) has bungee cords (1) connected to a pair of polyester belts (2) via double clamps (15). The cords are also fastened around guide rollers (4) on end rails of the door body. The belts are wound around the pulleys (11) connected to an electric motor (12). The motor reciprocates the door body back and forth along the end rails.