Abstract: A lifting column includes at least five column elements which are at least partly nested, and a first and a second drive arrangement. The first drive arrangement is configured to move the three innermost column elements relative to one another. The second drive arrangement is configured to move the three outermost column elements relative to one another.

Abstract: A linear actuator, a housing for such a linear actuator, an actuation system, and a method for assembling a linear actuator. The linear actuator has an actuating mechanism and a housing. The actuating mechanism includes a spindle and a nut and it is configured to convert rotational motion into translational motion. The housing has two housing parts and the actuating mechanism is at least partially arranged in the housing. The two housing parts form a plurality of separate cavities that are configured to receive separate components of the linear actuator, in particular of the actuating mechanism.

Abstract: A linear actuator, a housing for such a linear actuator, an actuation system, and a method for assembling a linear actuator. The linear actuator has an actuating mechanism and a housing. The actuating mechanism includes a spindle and a nut and it is configured to convert rotational motion into translational motion. The housing has two housing parts and the actuating mechanism is at least partially arranged in the housing. The two housing parts form a plurality of separate cavities that are configured to receive separate components of the linear actuator, in particular of the actuating mechanism.

Abstract: An actuator includes a threaded spindle and an internally threaded component screwed onto the threaded spindle. The component includes a plastic element having a first axial end and a second axial end and an interior having a width and a radially inwardly projecting flange at the first axial end, and the flange has an inner diameter less than the width of the interior. A metal element, such as a nut, is fixedly mounted in the interior of the plastic element, and the internal thread of the nut has a maximum diameter greater than the inner diameter of the flange.

Abstract: The electromechanical actuator cylinder provides a casing, an actuation rod mounted to be movable longitudinally relative to the casing, an electric motor provided with a stator and with a rotating rotor shaft, and a mechanism for converting a rotational movement of the rotor shaft into a linear movement in translation of the actuation rod. The actuator cylinder includes at least one roller bearing for guiding the rotor shaft in rotation relative to the casing and providing at least one row of rolling elements. An inner raceway for the row of rolling elements of the bearing is formed directly on the rotor shaft.

Abstract: An actuator includes a threaded spindle and an internally threaded component screwed onto the threaded spindle. The component includes a plastic element having a first axial end and a second axial end and an interior having a width and a radially inwardly projecting flange at the first axial end, and the flange has an inner diameter less than the width of the interior. A metal element, such as a nut, is fixedly mounted in the interior of the plastic element, and the internal thread of the nut has a maximum diameter greater than the inner diameter of the flange.

Abstract: The electromechanical actuator cylinder provides a casing, an actuation rod mounted to be movable longitudinally relative to the casing, an electric motor provided with a stator and with a rotating rotor shaft, and a mechanism for converting a rotational movement of the rotor shaft into a linear movement in translation of the actuation rod. The actuator cylinder includes at least one roller bearing for guiding the rotor shaft in rotation relative to the casing and providing at least one row of rolling elements. An inner raceway for the row of rolling elements of the bearing is formed directly on the rotor shaft.

Abstract: An actuator includes a screw mechanism (13) having a threaded nut (16) rotatable by an electric motor (11) about a longitudinal axis (x) and a screw (17) translatable along the axis between an axially extended position and an axially retracted position. The screw (17) is connectable to a wire (W) of a Bowden cable (C) having an outer sheath (S). The actuator has a casing (20) with a first, fixed transversal surface (18). A cup (50) is mounted axially slidably on the casing (20) and has a second transversal surface (51) adapted for resting against an end of the sheath (S). A spring (53) is compressed between the first, fixed transversal surface (18) and the sliding cup (50). The cup (50) is capable of reaching an axially extended position, corresponding to a released brake condition, and an axially retracted position towards the first fixed transversal surface (18), against the bias of the spring (53), corresponding to a brake actuated condition.

Abstract: An actuator includes a screw mechanism (13) having a threaded nut (16) rotatable by an electric motor (11) about a longitudinal axis (x) and a screw (17) translatable along the axis between an axially extended position and an axially retracted position. The screw (17) is connectable to a wire (W) of a Bowden cable (C) having an outer sheath (S). The actuator has a casing (20) with a first, fixed transversal surface (18). A cup (50) is mounted axially slidably on the casing (20) and has a second transversal surface (51) adapted for resting against an end of the sheath (S). A spring (53) is compressed between the first, fixed transversal surface (18) and the sliding cup (50). The cup (50) is capable of reaching an axially extended position, corresponding to a released brake condition, and an axially retracted position towards the first fixed transversal surface (18), against the bias of the spring (53), corresponding to a brake actuated condition.

Abstract: A construction unit, such as a bearing unit, comprises at least two metal means parts (9, 10; 17, 19) which are connected to each other through a connection means (11, 18, 24, 28) which comprises a brazed or a soldered connection (14, 15, 22). The connection means also comprises at least one further connection, e.g. a welded (16, 27), screwed (30), glued or a plastically formed (23) connection.

Abstract: A clutch includes a housing, an input shaft and an output shaft rotatably supported with respect to the housing, a drive gear set and a control gear set each comprising a first gear, a number of pinion gears, a carrier onto which the pinion gears are mounted, and a second gear, each pinion gear meshing with the corresponding first gear and second gear of the gear set, as well as control elements for influencing the rotation of a first or second gear of the control gear set. The first gear of the drive gear set is connected to the input shaft, the carrier of the drive gear set is connected to the output shaft and the second gear of the drive gear set is connected to the carrier of the control gear set.

Abstract: A forward-reverse control device comprises a housing, a rotatable input member, having a rotatable output member, a gear set for reversing the input rotation, as well as a selector for selectively connecting the input member and the output member directly or through the gear set, wherein the selector is driveable by an electric actuator.

Abstract: A clutch, comprising a clutch disk (12), a calliper means (10) which carries opposite friction pads (24, 25) between which the clutch disc (12) is accommodated, said clutch disc (12) and calliper means (10) each being connected to one of an ingoing (9) and an outgoing (13) member, biasing means (32) for urging the opposite friction pads (24, 25) into frictional engagement with the clutch disc (12), motor means (2, 3) as well as screw actuation means (17-22) which are driveable by the motor means (2, 3) for displacing the opposite friction pads (24, 25) with respect to each other against the biasing force exerted by the biasing means (32), characterized in that the screw actuation means comprise two screw/nut actuators (17-22) with opposite screws threads, which disc (12), one of the nut (17, 18) and screw (21, 22) of each actuator being notably supported with respect to either the ingoing (9) or the outgoing (13) member, and the other of said nut (17, 18) and screw (21, 22) of each actuator engaging the oppos