SICHERHEITSAUSLÖSEVORRICHTUNG BEI EINEM GERADLINIGEN RIEMENTRIEB FÜR AUTOMATISCH ÖFFNENDE TÜREN VON AUFZÜGEN UND SENKRECHTFÖRDERERN

摘要

The invention relates to a safety device for gates of lifts and elevators comprising a release device (4) which, when a door of the lift gate is closing and meets an obstruction, causing an excessive resistance to the movement thereof according to a prefixed resistance threshold value, releases the coasters (6) bearing the door from means for moving thereof such as to cause said coasters (6), and in consequence said door, to stop, while said means for moving said door remains activated. The release device (4) is a completely mechanical safety device.