Abstract: A structural element for the fabrication of a panel of a sectional door, which is movable between a closed and an open position along a predetermined pathway. The sectional door possesses a shell, generally of metal, having two mutually parallel sides, bent back on themselves, thus essentially creating structural elements aligned somewhat perpendicularly to the predetermined pathway. When in the closed position, the shell is characterized by forming an outer door surface which is external to the space to be closed, and forming an internal door surface opposed thereto.

Abstract: A gate includes a gate leaf which is movable between a closed and an open position, and a plurality of gate leaf elements, which are tiltable. The gate leaf includes a door leaf which is swingable around a pivot axis extending perpendicular to the tilt axes. When closed, the door leaf is mounted in an opening in the gate leaf and the door leaf extends essentially parallel to the plane of the gate leaf. A stabilizing arrangement opposes the deformation of the gate leaf and a threshold element which rests on the floor of the opening when the gate leaf is in the closed position. The height of the threshold element is essentially less than 20 mm, preferably less than 10 mm.

Abstract: Proposed is a structural component for the assembly of a sectional door, which is to be movable along predetermined guide rails between a closed and an open position. Included are an outer surface which lies remote from an inner space, which space is to be isolated upon closing the door, and an inner surface oppositely located from the outer surface. The component possesses lateral edges running approximately parallel to the guide rails. Overlapping an exposed lateral edge is protective sheathing forming a thereto affixed cap, running at least somewhat parallel to the lateral edges of the panels. As an optional choice, a protective edge sheathing may also be placed on the outside to aid in the incorporation of the invented structural component as described above.

Abstract: A structural element for the fabrication of a panel of a sectional door, which is movable between a closed and an open position along a predetermined pathway. The sectional door possesses a shell, generally of metal, having two mutually parallel sides, bent back on themselves, thus essentially creating structural elements aligned somewhat perpendicularly to the predetermined pathway. When in the closed position, the shell is characterized by forming an outer door surface which is external to the space to be closed, and forming an internal door surface opposed thereto.

Abstract: The invention relates to a door comprising a leaf that is movable between an open position and a closed position, a guiding element which is fixed to the door leaf, interacts with a guide rail, and directs the movement of the door leaf, and a locking device that is movable between a released position in which said locking device releases movement of the door leaf and a locked position in which said locking device counteracts movement of the door leaf. The locking device is provided with a locking element which stops at a contact surface of the guide rail when said locking device is moved into the locked position.

Abstract: A door including a leaf which is closable between an open position and a closed position. A guide rail arrangement directs the movement of the door leaf. A fastening arrangement fixes a rail element of the guide rail arrangement to a wall by a plurality of fastening elements, each of which can be fixed to the wall as well as to the rail element. The wall has an opening which can be closed with the aid of the door leaf. A pulling arrangement can be fixed to the door leaf as well as to a drive unit and/or a weight-balancing device. At least one protective element is assigned to the guide rail arrangement. The protective element can be fixed to the rail element and/or at least one of the fastening elements and is used for bridging an intermediate space between the rail element and the wall.

Abstract: An arrangement for monitoring a condition of a counterbalance torsion spring in an overhead door or gate and preventing the door or gate from accidentally slamming shut or dropping too rapidly when the spring fails. The arrangement includes a drum mounted on a shaft which transmits the torque of the spring to the drum. During normal operation a sensor and release assembly maintains a catcher in a inactive position and when the spring fails, the sensor and release assembly allows the catcher to move to an active position and engage a grabber disposed on an inside surface of the drum to block rotation of the drum and therefore movement of the door or gate.

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.