An apparatus for a thrust reverser actuation system (“TRAS”), the apparatus comprising: an input shaft; a first component located concentrically around the input shaft; a second component located concentrically around the first component; a first ballscrew mechanism between the input shaft and the first component, and configured such that rotational movement of the input shaft causes a translational movement of the first component via the first ballscrew mechanism; and a second ballscrew mechanism between the first component and the second component, and configured such that rotational movement of the first component causes a translational movement of the second component via the second ballscrew mechanism.

Medical devices in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to expand.

Drive devices, in particular linear drives, spindle drives, and/or telescopic drives, for moveable vehicle components are provided. A housing assembly for a drive device is also provided. A connecting element for a drive device is also provided. A spring element for a drive device is also provided.

An actuator includes a motor, a shaft, an actuator body, a first tension element, a cable tensioner, and a tension gauge. The shaft is mounted to the motor. The actuator body includes a first anchor body and a second anchor body. The first tension element is mounted to encircle the shaft and includes a first end and a second end. The first end of the first tension element is mounted to the first anchor body of the actuator body. The cable tensioner is mounted to the second anchor body of the actuator body and includes a tension adjuster, a second tension element, and a tension element terminator. The second tension element is mounted to the tension adjuster. The second end of the first tension element is mounted to the second tension element. The tension gauge is mounted adjacent the tension adjuster to indicate a tension of the second tension element.

An apparatus for a thrust reverser actuation system (“TRAS”), the apparatus comprising: an input shaft; a first component located concentrically around the input shaft; a second component located concentrically around the first component; a first ballscrew mechanism between the input shaft and the first component, and configured such that rotational movement of the input shaft causes a translational movement of the first component via the first ballscrew mechanism; and a second ballscrew mechanism between the first component and the second component, and configured such that rotational movement of the first component causes a translational movement of the second component via the second ballscrew mechanism.

An actuator for opening and closing a decklid or other closure on a motor vehicle is described and shown. The actuator can include a motor, a rod coupled to and driven by the motor, a first sleeve coupled to and driven by the rod, and a second sleeve coupled to and driven by the first sleeve. The first and second sleeves can be slidably coupled to one another, and/or can be rotatably locked relative to one another.

An adjustable lifting column for adjusting a piece of furniture comprises a drive assembly, a threaded spindle assembly comprising at least two concentrically arranged threaded spindles, of which an outer threaded spindle concentrically surrounds at least one further threaded spindle, a telescopic tube assembly comprising three concentrically arranged telescopic tubes, and a driver mechanism having an internal thread. The threaded spindle assembly is located within the telescopic tube assembly. Two adjacent threaded spindles of the threaded assembly have a common threaded connection. One of the at least two threaded spindles in the threaded spindle assembly is connected to the drive assembly for driving this one threaded spindle. The outer threaded spindle also has an external thread in which the internal thread of the driver mechanism engages. The driver mechanism is connected to a middle telescopic tube of the three telescopic tubes.

A lifting column includes a component having an internal thread, as well as a hollow shaft having an external thread, which is in engagement with the internal thread of the component. A threaded spindle is disposed inside the hollow shaft and has an external thread, which is in engagement with an internal thread of the hollow shaft. Furthermore, the lifting column includes a drive device configured to rotate the hollow shaft relative to the threaded spindle and the component. When the hollow shaft rotates, the component and the hollow shaft move in the same axial direction so that the height of the lifting column is changeable.

The present invention provides an adjustment arrangement (10), comprising a rotating input element (26) at which a first torque from a motor arrangement (18, 22) can be inputted into the adjustment arrangement, a rotating output element (16) at which a second torque can be outputted by the adjustment arrangement, and a transmission portion for converting the first torque into the second torque, the transmission portion comprising a transmission means (32) having a first threaded portion (30) and a second threaded portion (34), the first threaded portion converting a rotation of the input element (26) into an axial movement of the transmission means, and the second threaded portion converting an axial movement of the transmission means into a rotation of the output element (16).

An apparatus for a thrust reverser actuation system (“TRAS”), the apparatus comprising: an input shaft; a first component located concentrically around the input shaft; a second component located concentrically around the first component; a first ballscrew mechanism between the input shaft and the first component, and configured such that rotational movement of the input shaft causes a translational movement of the first component via the first ballscrew mechanism; and a second ballscrew mechanism between the first component and the second component, and configured such that rotational movement of the first component causes a translational movement of the second component via the second ballscrew mechanism.