Dorma Gmbh + Co. Kg

Dorma Deutschland Gmbh

Dormakaba Deutschland Gmbh

Thomas Wildförster

Sven Busch

Volker Bienek

Thomas Salutzki

Michael Hufen

Matthias Drux

Alexander Hellwig

Sabine Wiemann

Thomas Pabst

Martin Römer

Holger Hänsch

Tim Wulbrandt

Dietmar Finis

Michael Glanz

A door drive includes a housing and at least one regulating valve for the adjustable regulation of a fluid flow within the door drive. The one regulating valve or at least one of the several regulating valves includes two ends with respectively one engaging part, in particular for a tool, wherein the one regulating valve or the regulating valves extend/s in such a manner through the housing that the engaging parts for adjusting the one regulating valve or the regulating valves may be manipulated from outside the housing.

Door drive

A solenoid distribution valve has a housing, a valve chamber integrated in the housing and a first valve seat bore for connection to a first line, a second valve seat bore as a connection to a second line and a clear opening to a third line, an electromagnet, and a valve lifter that can be moved by the electromagnet. A valve lifter within the valve chamber includes a first sealing surface facing the first valve seat bore and a second sealing surface facing the second valve seat bore that are optionally closable. The valve lifter extends out of the valve chamber through the second valve seat bore to the electromagnet. When the second valve seat bore is closed, the valve lifter is drawn, via a differential pressure ratio, by the pressure in the second line, into the second valve seat bore.

Hydraulic solenoid distribution valve

A hydraulic solenoid control valve, including a valve housing, a valve chamber, having a first valve seat bore as a connection to a first line, a second valve seat bore as a connection to a second line, and a free aperture to a third line, a solenoid, and a valve spindle movable by the solenoid and partially arranged in the valve chamber. The valve spindle includes, a first sealing surface facing the first valve seat bore and a second sealing surface facing the second valve seat bore. The first and the second valve seat bores can be closed. The valve spindle protrudes from the valve chamber through the second valve seat bore toward the solenoid. When the second valve seat bore is closed, the valve spindle is pulled into the second valve seat bore by a differential-area-ratio through the pressure in the second line.

Hydraulic directional solenoid valve and door closer having a hydraulic directional solenoid valve

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.

Door closer

A door operator to be disposed at a door leaf, a door frame, a door transom, or a wall, with at least one mounting plate, on which the door operator assembly is disposed. The assembly has a modular design and has at least one connector module, a drive module and a main module, which are latched onto the mounting plate by latching elements. The main module includes a system carrier, which accommodates at least one supply unit and at least one control unit, fastened by latching elements.

Door actuator

The present invention relates to a door operator () with a drive unit, wherein the drive unit presents a gear with a gear housing (). According to the invention, it is intended that the gear housing () has at least one first shell element () and at least one second shell element (), wherein the shell is elements () are able to be brought into mutual abutment for forming an inner gear compartment ().

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Schwelm, Germany

Thomas Wildförster