Abstract: For improving manual operation of an actuator (1), a novel clutch (4, 6) is proposed that features at least one movable protrusion (12) that is axially movable along a coupling axis (11) of the clutch (4, 6) relative to an element (8) that carries the protrusion (12). This design has the advantage that engagement of the clutch (4, 6) is possible under all circumstances, even in cases in which the protrusion (12) is not yet in a correct rotational coupling position (18) (cf. FIG. 7), as the protrusion (12) can be transferred into the coupling position (18) by a rotational movement (24, 25) at all times.

Abstract: For improving manual operation of an actuator (1), a novel clutch (4, 6) is proposed that features at least one movable protrusion (12) that is axially movable along a coupling axis (11) of the clutch (4, 6) relative to an element (8) that carries the protrusion (12). This design has the advantage that engagement of the clutch (4, 6) is possible under all circumstances, even in cases in which the protrusion (12) is not yet in a correct rotational coupling position (18) (cf. FIG. 7 ), as the protrusion (12) can be transferred into the coupling position (18) by a rotational movement (24, 25) at all times.

Abstract: A worm gear drive mechanism (1) having a housing (8), a rotatably mounted worm gear (4) and a worm shaft (2) rotatably mounted at at least one bearing point (7), wherein the bearing point (7) has a displacement element (10) for displacing the axial spacing (17) between the gear axis of rotation (6) of the worm gear (4) and the shaft axis of rotation (5) of the worm shaft (2).

Abstract: A worm gear drive mechanism (1) having a housing (8), a rotatably mounted worm gear (4) and a worm shaft (2) rotatably mounted at at least one bearing point (7), wherein the bearing point (7) has a displacement element (10) for displacing the axial spacing (17) between the gear axis of rotation (6) of the worm gear (4) and the shaft axis of rotation (5) of the worm shaft (2).

Abstract: An apparatus for converting a rotational movement into an axial movement. A threaded rod is provided, on which a nut is arranged to be movable axially to the threaded rod. At least one blocking structure is provided, which is so arranged that it blocks rotational movement of the nut during the axial movement along the threaded rod. There is provided on the threaded rod at least one end stop, which limits axial movement of the nut along the threaded rod. Between the axially movable nut and the end stop, a wedge lock washer pair is arranged. The wedge lock washer pair is so embodied that the wedge lock washers are brought into engagement by the pressing of the nut against the end stop and produce a prestress torque, wherein torque for releasing the nut from the end stop is smaller, essentially by the prestress torque of the wedge lock washer pair, than the torque applied as the nut first pressed against the end stop.

Abstract: Actuator for operating a valve, including: a drive component; a drive shaft, which is connectable with the valve; and a torque lock, which is connectable with the drive shaft The torque lock includes at least one essentially rotationally symmetric spring element arranged in a ring-shaped housing, and is so constructed that a torque introduced via the drive component causes the drive shaft to rotate, and a torque introduced via the valve blocks rotation of the drive shaft.

Abstract: An apparatus for converting a rotational movement into an axial movement. A threaded rod is provided, on which a nut is arranged to be movable axially to the threaded rod. At least one blocking structure is provided, which is so arranged that it blocks rotational movement of the nut during the axial movement along the threaded rod. There is provided on the threaded rod at least one end stop, which limits axial movement of the nut along the threaded rod. Between the axially movable nut and the end stop, a wedge lock washer pair is arranged. The wedge lock washer pair is so embodied that the wedge lock washers are brought into engagement by the pressing of the nut against the end stop and produce a prestress torque, wherein torque for releasing the nut from the end stop is smaller, essentially by the prestress torque of the wedge lock washer pair, than the torque applied as the nut first pressed against the end stop.

Abstract: A mechanical brake having an axial shifting mechanism arranged on an input drive shaft and an axial shifting mechanism arranged on an output drive shaft. The two axial shifting mechanisms are so embodied that their shifting directions are opposed and that, upon introduction of a torque via the input drive shaft and/or the output drive shaft, the axial shifting mechanism associated with the input drive shaft has precedence over the axial shifting mechanism associated with the output drive shaft.

Abstract: A mechanical brake having an axial shifting mechanism arranged on an input drive shaft and an axial shifting mechanism arranged on an output drive shaft. The two axial shifting mechanisms are so embodied that their shifting directions are opposed and that, upon introduction of a torque via the input drive shaft and/or the output drive shaft, the axial shifting mechanism associated with the input drive shaft has precedence over the axial shifting mechanism associated with the output drive shaft.

Abstract: actuator for operating a valve, including: a drive component; a drive shaft, which is connectable with the valve; and a torque lock, which is connectable with the drive shaft The torque lock includes at least one essentially rotationally symmetric spring element arranged in a ring-shaped housing, and is so constructed that a torque introduced via the drive component causes the drive shaft to rotate, and a torque introduced via the valve blocks rotation of the drive shaft.