Einrichtung zum Bewegen von Schiebetüren

摘要

A device for moving sliding doors which includes a mechanism for moving and supporting a door (8) is driven by a DC electric motor (17) and is provided with an emergency operation system in case of black-out consisting of at least one capacitor capable of delivering a capacitive discharge suitable to allow at least two operating cycles of the device. The movement of door (8) preferably takes place along an arc of circumference centered on the vertical, and the device thus includes a spring (12) suitable to make resistance during the lowering of door (8) and to help the rotation during the rising of door (8), whereby the power required along the whole said arc is kept practically constant.