Abstract: A door maneuvering arrangement for opening and closing a door. The arrangement includes a line loop connected to a part of the door, a drive wheel, a motor for reversibly rotating the drive wheel and a plurality of guide pulleys for guiding the line loop. First guide pulleys are mounted in the vicinity of the drive wheel and cause a first line section of the line loop to bear on and extend in an omega-shape path around a first portion of the circumference of the drive wheel. Second guide pulleys are mounted in the vicinity of the drive wheel and caused a second line section of the line loop to bear on and extend in an omega-shape path around a second portion of the circumference of the drive wheel.

Abstract: A drive arrangement for maneuvering a generally vertically moveable door, the arrangement comprising at least one bendable door lifting element which is connected to at least one of the two longitudinal side edges of the door. In order to enable the force required to maneuver the door to be held substantially constant, or to vary only significantly over the full opening range of the door, particularly in the case of doors of the kind in which the force required to open or maneuver the door increases with the extent to which the door is opened, the door lifting element has connected thereto an elongated, bendable counterbalance device, and the door lifting element will function to move the counterbalance device between an inactive position, in which it is generally horizontal, and an active position in which at least a part of the weight of the counterbalance device will exert a lifting force on the door through the intermediary of the door lifting element.