Abstract: A connecting sleeve suitable for the production of a push-pull link bar includes a main body, a coupling section which is formed or arranged on the outer circumferential side on the main body, and a through bore, characterized in that the connecting sleeve has a first seal which is arranged at least partially on the outer circumferential side and a second seal which closes at least the through bore.

Abstract: A fail-safe push-pull rod has two load paths that are separated from each other, of which always only one takes up the load transmission and which automatically detects possible damage to or functional failure of the first load path so that in such a case then the second load path takes over the load transmission, whereby the functional change from the first to the second load path can be determined during the routine maintenance inspection by an inspection hole irreversibly showing the damage or the failure of the first load path.

Abstract: Draw-pull bar used for guidance and mechanical mount with a locking mechanism consisting of two locking elements, namely a securing clip with a locking nose shaped as partial ring that is arranged on the toothed ring of the tubular body of the draw-pull bar by means of swivel arm and in which the locking nose engages when the securing clip swivels to the toothed ring. A bar with a hinge is fitted to one side of the resilient partial ring. When using a locking element, the bar snaps into the other end of the partial ring in such a way that the partial ring is clamped tight and an unintentional turning or undoing of the two locking elements is prevented without previous opening of the bar.

Abstract: A fail-safe push-pull rod has two load paths that are separated from each other, of which always only one takes up the load transmission and which automatically detects possible damage to or functional failure of the first load path so that in such a case then the second load path takes over the load transmission, whereby the functional change from the first to the second load path can be determined during the routine maintenance inspection by an inspection hole irreversibly showing the damage or the failure of the first load path.

Abstract: A draw-pull bar is described which consists of at least one adapter with a metallic tubular end and of an inner and outer tubular body out of carbon-fiber-reinforced plastic (CFRP). It is characterized thus that the outer CFRP tubular body conically wraps the metallic end of the adapter from the outside in a form-fit manner while the inner CFRP tubular body is form-fit connected with the metallic ends of the adapter. An elastomeric layer is tapered in the contact area between the inner tubular body and the outer tubular body in such a way that both tubular bodies are separated on the one side, but are arranged against each other in a protected and damped manner on the other side.

Abstract: Draw-pull bar used for guidance and mechanical mount with a locking mechanism consisting of two locking elements, namely a securing clip with a locking nose shaped as partial ring that is arranged on the toothed ring of the tubular body of the draw-pull bar by means of swivel arm and in which the locking nose engages when the securing clip swivels to the toothed ring. A bar with a hinge is fitted to one side of the resilient partial ring. When using a locking element, the bar snaps into the other end of the partial ring in such a way that the partial ring is clamped tight and an unintentional turning or undoing of the two locking elements is prevented without previous opening of the bar.

Abstract: A draw-pull bar is described which consists of at least one adapter with a metallic tubular end and of an inner and outer tubular body out of carbon-fibre-reinforced plastic (CFRP). it is characterized thus that the outer CFRP tubular body conically wraps the metallic end of the adapter from the outside in a form-fit manner while the inner CFRP tubular body is form-fit connected with the metallic ends of the adapter. An elastomeric layer is tapered in the contact area between the inner tubular body and the outer tubular body in such a way that both tubular bodies are separated on the one side, but are arranged against each other in a protected and damped manner on the other side.

Abstract: A threaded device is embodied in the form of an anti-twisting stop which is rotatably connected to a traction-pressure rod. Two oppositely located ratchet devices are connected by a body to stop the traction-pressure rod in several rotational positions with a predetermined locking force and, afterwards, to release it each time. The threaded device facilitates the mounting of the traction-pressure rod by the fact that the twisting should not be locked by additional handling, thereby making it possible to carry out a fine adjustment without additional measures. The ratchet device comprises, for example, two ratchet elements provided with one or several catch lugs or a metal or plastic ring part on one side and a gear rim on the other side. In addition, the threaded device can be provided with a spring element and a second anti-noise threaded device.

Abstract: The invention relates to a threaded device (7) embodied in the form of an anti-twisting stop which is rotatably connected to a traction-pressure rod. The inventive device comprises two oppositely located ratchet devices which are connected by a body enabling to stop the traction-pressure rod in several rotational positions with a predetermined locking force and, afterwards, to release it each time. Said threaded device (7) facilitates the mounting of the traction-pressure rod by the fact that the twisting should not be locked by additional handling, thereby making it possible to carry out a fine adjustment without additional measures. The ratchet device (4) comprises, for example, two ratchet elements (10, 11) provided with one or several catch lugs (12) or a metal or plastic ring part on one side and a gear rim on the other side. In addition, said threaded device can be provided with a spring element and a second anti-noise threaded device.

Abstract: A door system is driven by a motor. The door wings of this door system are guided by rollers (27) on a rail (10) secured in a door frame construction. The driving motor (30) of each door wing is secured onto an operating mechanism receiving the roller (27). It acts on the roller (27) in a positive manner or by friction-grip. The door system with the driving motor (30) fixedly arranged on the door wing and moving jointly with the door wing has a simpler structure as compared to known door systems, and can be manufactured and serviced at favorable cost.

Abstract: A manually operable carousel revolving door having a locking element with a rotary axle disposed inside. The door comprises a braking motor, a rotational speed detector and a rotation direction detector, all actively connected to the locking element. If the door rotates at a speed above a predetermined rate or in a wrong direction, the rotation speed detector and the rotation direction detector signals the braking motor to act on the rotary axle of the locking element to slow the rotation rate of the door. The braking motor can be disposed in a receptacle in the top side covering in the revolving door. In addition, the braking motor can be connected to the rotary axle via a chain drive or a toothed gear drive.

Abstract: An apparatus including a turnstile for controlling the passage of person including a locking assembly with a bearing dish for rotating about an axis of rotation which is oriented approximately 45.degree. from a horizontal line. A releasable locking device selectively allows and restrains rotational movement of the locking assembly in both directions. At least two locking arms are pivotally mounted to the bearing dish about pivot axis extending transverse to a longitudinal axis of the respective locking arm. Each locking arm is pivotable between a substantially-horizontally locked position and a released position permitting unobstructed passage to the turnstile. A locking bar is provided for each locking arm which arrests the respective locking arm in the locked position. An electromagnet maintains a release device in a pre-cocked position. Upon loss of power, the electromagnet actuates the locking bolt to pivot the locking arm into the release position.