Abstract: A revolving door and a method for producing a revolving door are provided with a turnstile which is arranged between opposing barrel elements and with a ceiling assembly which is arranged on top of the barrel elements and on which the turnstile is rotatably mounted. The barrel elements each have an inner glass element and an outer glass element, with the ceiling assembly resting on a top finishing surface of the inner glass element.

Abstract: A revolving door with a turnstile which is arranged between opposing barrel elements and with a ceiling assembly which is arranged on top of the barrel elements and on which the turnstile is rotatably mounted. The ceiling assembly has a sandwich design with at least one bottom cover panel and/or at least one top cover panel and at least one filler.

Abstract: The invention relates to a regulating valve, which is attachable, in particular in a bore of a hydraulic door closer, executed with a female thread. The regulating valve has a body, adjoined by a regulating area, and a thread provided with an anti-rotation means. The thread with the anti-rotation element can be screwed into the female thread of the bore of the hydraulic door closer. In order to provide a regulating valve with a simple design while excluding unwanted adjustment of the regulating valve during the operation, the anti-rotation means includes a raised area, which can cooperate with the bore or the female thread of the door closer.

Abstract: A system for interlocking and unlocking a sliding door includes a handle, attachable flush-mountably to the sliding door. The handle has an electro-mechanical locking mechanism attachable in a wall-mount manner, and having a movable locking element movable between a protracted locking position and a retracted releasing position, and an electronic drive, incorporated into the locking mechanism and in operative connection with the locking element. The handle is manually movable between an opening position and a closing position, the handle and the locking mechanism cooperate such that, in the locking position of the locking element and in the closing position of the handle, movement of the sliding door from a closed location in the direction of an opening location can be blocked and, in the opening position of the handle, movement of the sliding door can be effected from the closed location in the direction of the opening location.

Abstract: A door operator or a door closer having at least one housing and at least one piston supported to be movable in a reception of the housing. The surfaces of the reception and/or of the at least one piston have been treated by exposure to electromagnetic radiation.

Abstract: The invention relates to a regulating valve, which is attachable, in particular in a bore of a hydraulic door closer, executed with a female thread. The regulating valve has a body, adjoined by a regulating area, and a thread provided with an anti-rotation means. The thread with the anti-rotation element can be screwed into the female thread of the bore of the hydraulic door closer. In order to provide a regulating valve with a simple design while excluding unwanted adjustment of the regulating valve during the operation, the anti-rotation means includes a raised area, which can cooperate with the bore or the female thread of the door closer.