Abstract: A safety lock, particularly a self-locking lock, including at least one l catch and a bolt operable by a lock cylinder and a split latch nut. For creating a particularly inexpensively manufacturable and relatively narrow safety lock, a coupling device of the lock is provided with two congruent racks which have a panic or freewheel function. The racks are superimposed and mesh with the teeth of the inner and outer nut. An electromagnetic coupling is achieved with the aid of a coupling lever, which is fixable to each rack directly or indirectly subjects to the function of the particular rack and engageable with a detent of the racks.

Abstract: A self-locking lock with a bolt, a lock swing catch and an auxiliary swing atch, in which the bolt and lock swing catch move out in a locking position in spring-loaded manner with the door closed and move out in a locking position are lockable by a slide plate, while the auxiliary swing catch pressed on a locking plate and in which the bolt, with the door open, is held back in the lock housing and is arrestable by the auxiliary swing catch by means of the slide plate. In order to provide a lock secure against manipulation and reliable in operation, where an uncontrollable extension of the bolt is particularly effectively prevented even in intermediate states of the opening and closing process, on opening the bolt leads compared with the lock swing catch and is arrestable completely retracted in the lock and the lock swing catch is provided with a widening, e.g., with a pivotable, springloaded swing catch part.

Abstract: An electrically actuable furniture locking device includes a locking housing, a locking pin and an indicator element. The locking housing is provided with two introduction openings for a locking pin. In the locking housing, a locking slide is arranged to be actuated electromagnetically and adjusted from a locking position into an unlocking position. A lever armature, which can be connected to the locking slide, can be connected to the locking slide such that it can be optionally switched over for closed-circuit or open-circuit operation. The locking device permits an arrangement adaptable to various installations, as well as monitoring of the open and closed states and optionally closed- and open-circuit operations.

Abstract: The invention relates to an arresting/release device for a swing catch of a working current door opener with a catch lever, which arrests or releases the swing catch, a first safety lever, which maintains the catch lever in the arrested position and is pivotable with the aid of an electromagnet to a position releasing the catch lever, and with a second safety lever, which acts on the first safety lever for impact protection of the catch lever.In order to achieve an impact protection advantageous from the manufacturing and installation standpoint, the second safety lever is constituted by a mechanically decoupled lever of low mass mounted in its center of gravity. This symmetrically constructed, vibration-proof, second safety lever secures the first safety lever in an impact-preventing position and is magnetically coupled to and pivotable with the coil core, which is made from a soft magnetic material and has a relatively long acceleration path.

Abstract: A door opener wich can be used for closed-circuit current operation as well s for working current operation, includes a door latch and a trimmer which can be moved for blocking and releasing the door latch, an armature which can be displaced for blocking or releasing the trimmer, an electromagnet for displacing the armature, whereby the armature can be moved between three consecutive armature positions, namely a first armature position, a second armature position, and a third armature position. The armature positions alternately provide a locking and releasing of the door latch. The door opener also includes a stop element, which can be displaced for delimiting the displacement path of the armature between a first stop position and a second stop position such that the first or third armature position is blocked.

Abstract: An electric door opener with a trimmer actuatable by an armature and a mat coil. The trimmer is adjustably positioned for the release or locking of a door opener latch. The door opener is useable as an electric no-load current door opener and as an operating current door opener because a selector device is provided to switch the armature-trimmer system between no-load current movement positions and operating current movement position.

Abstract: A door opener with a pivotable latch for fitting in a door frame, where a door engages in its closed position with a bolt on a locking surface of the latch for fixing the door position in the door frame and which is characterized in that the latch has a latch base and at least one adapting element, the locking surface is formed on the adapting element, the adapting element is connectable to the latch base and the adapting element has a predeterminable thickness for the adjustment of the door in the closed position.

Abstract: A bolt actuating device controlled by a switching device of a burglar alarm is described. The adjusting device has a direct current motor with clockwise-counterclockwise operation and whose rotation direction is controllable by polarity reversal. The bolt is oriented transversely to the motor shaft. The motor rotation is transformed into a longitudinal movement by means of a gear and is transferred by means of a flexible shaft or a bent lever to the bolt.

Abstract: A locking/release mechanism for a pivot bolt of a closed-circuit door opener with a safety catch for the pivot bolt, which is controlled by an electromagnet. In order to reliably ensure release of the pivot bolt, even if a person has exerted strong pressure thereon prior to the cutting out or interruption of the magnet current, a locking lever is positioned between the electromagnet and the safety catch. The locking lever has a two-armed construction, one arm being provided with a stop member for engaging with the safety catch and the other arm being in the form of the electromagnet armature. The effective contact surface between the safety catch and the stop member is constructed in such a way that there is a wedge-like displacement action on the stop member through the safety catch.