Abstract: A linkage for force transmission between a driven axle of a door actuator and an assembly surface, includes a hinge, a fastening arrangement designed for fastening the hinge to the assembly surface, in particular a door, frame or wall, wherein an assembly axis is defined perpendicularly to the assembly surface, and a lever arrangement which is fastened to the hinge so as to be rotatable about a hinge axis perpendicular to the assembly axis and which is designed for rotationally-fixed connection to the driven axle of the door actuator. The linkage is designed to detach through the weight of the door actuator falling down in the event of a fire and/or wherein the linkage includes a thermally activatable trigger element that is designed to detach the linkage in the event of thermal activation triggered by a fire.

Abstract: A fire protection fastening device for fastening a door actuator, includes a frame with a back side, which is to be oriented to a mounting surface, in particular to a door, casing or wall, wherein a mounting axis is defined vertically to the back side. The frame is formed for arrangement between a door actuator and the mounting surface or is an integral component of the door actuator (102), at least one reaction chamber formed in the frame, wherein the frame delimits the reaction chamber on the entire circumference. The reaction chamber is open on the back side and/or on a front side of the frame opposite the back side. The device further includes a drive element made from thermally intumescent material disposed in the reaction chamber and, when activated, is formed for pushing away the door actuator from the mounting surface.

Abstract: A backplate for a door actuator, includes at least two mounting elements, one of the two mounting elements being formed for fastening to a mounting surface, in particular door, casing or wall, and the other mounting element for accommodating the door actuator. The backplate further includes at least one connecting assembly with a bar element mobile disposed at the first mounting element and a thermally activatable trigger element. The bar element is movable from a retaining position to a release position. In the retaining position, the bar element retains the second mounting element and, in the release position, releases the second mounting element. When thermally activated, the trigger element releases a movement of the bar element to the release position and/or, the trigger element moves the bar element to the release position.

Abstract: A fire protection fastening device for fastening a door actuator, includes a frame with a back side, which is to be oriented to a mounting surface, in particular to a door, casing or wall, wherein a mounting axis is defined vertically to the back side. The frame is formed for arrangement between a door actuator and the mounting surface or is an integral component of the door actuator (102), at least one reaction chamber formed in the frame, wherein the frame delimits the reaction chamber on the entire circumference. The reaction chamber is open on the back side and/or on a front side of the frame opposite the back side. The device further includes a drive element made from thermally intumescent material disposed in the reaction chamber and, when activated, is formed for pushing away the door actuator from the mounting surface.

Abstract: A backplate for a door actuator, includes at least two mounting elements, one of the two mounting elements being formed for fastening to a mounting surface, in particular door, casing or wall, and the other mounting element for accommodating the door actuator. The backplate further includes at least one connecting assembly with a bar element mobile disposed at the first mounting element and a thermally activatable trigger element. The bar element is movable from a retaining position to a release position. In the retaining position, the bar element retains the second mounting element and, in the release position, releases the second mounting element. When thermally activated, the trigger element releases a movement of the bar element to the release position and/or, the trigger element moves the bar element to the release position.

Abstract: A door operator for opening and/or for closing a door includes a housing, an output shaft with a cam disc, and a first piston guided in the housing, which first piston bears against the cam disc. The output shaft includes a first axle body supported in the housing. The first axle body is connected to the cam disc in a torque-proof manner by a first plug-in connection.

Abstract: A door closer, in particular a hinge door closer, including a locking function or free-swing function, having a door closer housing, an output shaft to be connected to a door, a piston assembly connected to the output shaft and guided in the door closer housing, a closer spring, a piston rod adapted to connect the piston assembly to the closer spring, a hydraulic lock compartment adapted to lock the closer spring, and in particular a free-swing assembly which is adapted to enable a translational motion of the piston assembly decoupled from the closer spring when the closer spring is locked.

Abstract: A door operator for opening and/or for closing a door includes a housing, an output shaft with a cam disc, and a first piston guided in the housing, which first piston bears against the cam disc. The output shaft includes a first axle body supported in the housing. The first axle body is connected to the cam disc in a torque-proof manner by a first plug-in connection.

Abstract: A door closer including a free-swing function, including a door closer housing, an output shaft connected to a door, a piston assembly connected to the output shaft and guided in the door closer housing, a closer spring, a piston rod adapted to connect the piston assembly to the closer spring, a free-swing assembly adapted to enable a translational motion of the piston assembly decoupled from the closer spring when the closer spring is locked, and a hydraulic lock compartment adapted to lock the closer spring. The output shaft is a cam-shaped rolling contour, in particular a cam disc, and the piston assembly includes at least one cam roller abutting on the rolling contour.

Abstract: A door closer, in particular a hinge door closer, including a locking function or free-swing function, having a door closer housing, an output shaft to be connected to a door, a piston assembly connected to the output shaft and guided in the door closer housing, a closer spring, a piston rod adapted to connect the piston assembly to the closer spring, a hydraulic lock compartment adapted to lock the closer spring, and a spring-loaded check valve arranged between the lock compartment and a space becoming smaller during the opening process of the door, in particular an accommodating space for the closer spring. The spring-loaded check valve locks toward the space becoming smaller.

Abstract: A door closer including a free-swing function, including a door closer housing, an output shaft connected to a door, a piston assembly connected to the output shaft and guided in the door closer housing, a closer spring, a piston rod adapted to connect the piston assembly to the closer spring, a free-swing assembly adapted to enable a translational motion of the piston assembly decoupled from the closer spring when the closer spring is locked, and a hydraulic lock compartment adapted to lock the closer spring. The output shaft is a cam-shaped rolling contour, in particular a cam disc, and the piston assembly includes at least one cam roller abutting on the rolling contour.

Abstract: A door closer, in particular a hinge door closer, including a locking function or free-swing function, having a door closer housing, an output shaft to be connected to a door, a piston assembly connected to the output shaft and guided in the door closer housing, a closer spring, a piston rod adapted to connect the piston assembly to the closer spring, a hydraulic lock compartment adapted to lock the closer spring, and a spring-loaded check valve arranged between the lock compartment and a space becoming smaller during the opening process of the door, in particular an accommodating space for the closer spring. The spring-loaded check valve locks toward the space becoming smaller.

Abstract: A door closer, in particular a hinge door closer, including a locking function or free-swing function, having a door closer housing, an output shaft to be connected to a door, a piston assembly connected to the output shaft and guided in the door closer housing, a closer spring, a piston rod adapted to connect the piston assembly to the closer spring, a hydraulic lock compartment adapted to lock the closer spring, and in particular a free-swing assembly which is adapted to enable a translational motion of the piston assembly decoupled from the closer spring when the closer spring is locked.