Abstract: In order to enable higher operational and manipulation security in the radio remote control of building or enclosure closures by simple means, the invention provides a method for remote control of an automatic building or enclosure closure (12.1, 12.2, 12.3), comprising: a) transmitting actuation signals (32.1-32.3) with authorization data by means of a transmitter (14) by radio, b) receiving the actuation signals (32.1, 32.2, 32.3) by a receiver, c) determining the authorization on the basis of the received data, and d) controlling the building or enclosure closure (12.1, 12.2, 12.3) to perform the action when authorization is available; wherein in step a) a first actuation signal (32.1) is repeatedly transmitted alternately on a first frequency using a first modulation and a second actuation signal (32.

Abstract: The invention relates to a building or enclosure termination opening and/or closing apparatus (10) having communication signed or encrypted by means of a key, and to a method for operating such. To allow simple, convenient and secure use by exclusively authorised users, the apparatus comprises: a first and a second user terminal (14, 30), with secure forwarding of a time-limited key from the first to the second user terminal being possible. According to an alternative, individual keys are generated by a user identification (42) and a secret device key (40).

Abstract: The invention relates to a building or enclosure termination opening and/or closing apparatus (10) having communication signed or encrypted by means of a key, and to a method for operating such. To allow simple, convenient and secure use by exclusively authorised users, the apparatus comprises: a first and a second user terminal (14, 30), with secure forwarding of a time-limited key from the first to the second user terminal being possible. According to an alternative, individual keys are generated by a user identification (42) and a secret device key (40).

Abstract: A separating device for a door leaf that is moveable overhead has a coupling element movable between a coupling position, in which the coupling element couples an output element of the drive device to the structural component, and a freewheeling position, in which the output element of the drive device is decoupled from the structural component. A locking member is provided which is movable between at least one release position, in which the locking member allows a movement of the coupling element into the freewheeling position, and at least one locking position, in which the locking member counteracts a movement of the coupling element into the freewheeling position. The locking member can be coupled to the drive device.

Abstract: The invention relates to a locking device and a door-drive device comprising a locking device for a door which can be secured against opening by unauthorized persons using force from the exterior. The locking device has a lever element consisting of two lever arms which pivot about a first pivoting shaft. A connecting element is hinged to the first lever arm for connecting the door and the second lever arm which has an engaging device.