Abstract: An electrically actuatable door opener for releasing a door is provided. The electrically actuatable door opener comprises a swivelable pivot latch which is arranged for holding or releasing a lock latch, a catch lever, a latch lever which can be moved between a position blocking the pivot latch and a position releasing the pivot latch, and which is arranged in relation to the catch lever in such a way that it can be locked by the catch lever in the blocking position, and a positioning actuator through which the catch lever can be moved from the position locking the latch lever to the position releasing the latch lever. A method for unlocking a door opener is also provided.

Abstract: The invention concerns a locking/unlocking device for a swivel latch of a door opener with a locking lever, that locks or unlocks the swivel latch, and a safety lock that holds the locking lever in a locking position and can be swiveled with the help of an electromagnet in a position unlocking the locking lever, wherein the safety lever is positioned in its center of gravity. Thus only one safety lever is required for the impact safety of the door opener, the susceptibility to shocks and vibrations can be reduced and a space-saving arrangement can be achieved. In a preferred form of execution, the safety lever has two arms wherein the electromagnet is in active connection with one lever arm and a compression spring is in active connection with the other lever arm. The assembly of the device is position-independent.

Abstract: An electrically operated door opener, with a swivelable swing trap for blocking or releasing of a door side switch trap, with a movable control lever, and a change-over, has been described, which can move into a position that blocks the swing trap and into a position that releases the swing trap, and is so arranged with the control lever, that the change-over into the blocking position can be locked by means of the control lever. Furthermore, there is a position indicator for moving the control lever for releasing or locking the change-over. The position indicator has an electromotor, on the motor axis of which an eccentric cam is mounted. The electromotor is mounted with a control lever, so as to hit the centrifugal cam against the control lever on activation of the electromotor due to the rotation of the motor axis, causing the control lever thereby to move.

Abstract: The invention concerns a locking/unlocking device for a swivel latch of a door opener with a locking lever, that locks or unlocks the swivel latch, and a safety lock that holds the locking lever in a locking position and can be swiveled with the help of an electromagnet in a position unlocking the locking lever, wherein the safety lever is positioned in its center of gravity. Thus only one safety lever is required for the impact safety of the door opener, the susceptibility to shocks and vibrations can be reduced and a space-saving arrangement can be achieved. In a preferred form of execution, the safety lever has two arms wherein the electromagnet is in active connection with one lever arm and a compression spring is in active connection with the other lever arm. The assembly of the device is position-independent.

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: 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.