Abstract: An emergency opening device for a lifting door as well as a lifting door with such an emergency opening device and a method for operating such an emergency opening device are provided. The emergency opening device has a driver, a movement element, an elongate drive member and a locking element. The driver is rotatably mountable on a rotationally fixed inner shaft of a drive device of the lifting door and is configured to be selectively connected to the drive device. The elongate drive member is connected to the movement element and is configured to transmit a movement caused by the movement element to the driver. The movement element is, for example, an elastic element which is pretensioned in a standby position and is configured to relax and to drive the elongate drive member by the released tension energy when the locking element is released.

Abstract: An emergency opening device for a lifting door as well as a lifting door with such an emergency opening device and a method for operating such an emergency opening device are provided. The emergency opening device has a driver, a movement element, an elongate drive member and a locking element. The driver is rotatably mountable on a rotationally fixed inner shaft of a drive device of the lifting door and is configured to be selectively connected to the drive device. The elongate drive member is connected to the movement element and is configured to transmit a movement caused by the movement element to the driver. The movement element is, for example, an elastic element which is pretensioned in a standby position and is configured to relax and to drive the elongate drive member by the released tension energy when the locking element is released.

Abstract: Door, in particular a high-speed door, comprising at least one door leaf made of a flexible material and a door drive for moving the door leaf between an open position and a closed position. The door leaf and the door drive may be coupled to one another via a fastening device which extends over the width of the door leaf, at least in places, along an upper edge of the door leaf in the closed position to form a rotatable winding axis in the shape of an open cylindrical shell.