An actuator assembly includes a primary load path for tightly coupling an actuated surface to a reference structure, and a secondary load path having a backlash portion for coupling the actuated surface to the reference structure with backlash, wherein the secondary load path is unloaded during an operative state of the primary load path and loaded during a failure state of the primary load path. A first sensor is configured to sense relative displacement between a portion of the primary load path and a portion of the secondary load path. A controller is operatively coupled to the first sensor, the controller configured to determine a load on the primary load path based on relative displacement sensed by the first sensor.

An actuator assembly includes a primary load path for tightly coupling an actuated surface to a reference structure, and a secondary load path having a backlash portion for coupling the actuated surface to the reference structure with backlash, wherein the secondary load path is unloaded during an operative state of the primary load path and loaded during a failure state of the primary load path. A first sensor is configured to sense relative displacement between a portion of the primary load path and a portion of the secondary load path. A controller is operatively coupled to the first sensor, the controller configured to determine a load on the primary load path based on relative displacement sensed by the first sensor.

Disclosed are a telescopic assembly and an occlusion mechanism. The telescopic assembly includes a rotating shaft, a telescopic piece, and a connecting piece; two spiral orbits extending in an axis direction are disposed on the circumferential side of the rotating shaft, and the spiral orbits are rotatably intersected with each other and communicate on tail ends to form a closed orbit; the telescopic piece sleeves around the rotating shaft; the connecting piece is movably connected to the telescopic piece, and the other end of the connecting piece moves in a spiral orbit groove all the time during movement; and with the rotation of the rotating shaft, the connecting piece drives the telescopic piece to do reciprocating movement along an axis so that the automatic telescopic movement of the telescopic piece is achieved. The telescopic assembly pushes a first rocking bar and a second rocking bar to achieve an occlusion action.

A reciprocating tool employs a motor gear of a drive motor to rotate a drive shaft. When the drive shaft rotates, a sliding member disposed into a ball rolling groove will move along the path of the ball rolling groove. At the same time, for the restriction of annular fixing member, the component force of the sliding member in an axial direction pushes a driven shaft to move back and forth repeatedly along the axial direction, so that a tool fixed on the driven shaft will also back and forth repeatedly in the axial direction, and thus a high efficient reciprocating tool is achieved.

A reciprocating tool employs a motor gear of a drive motor to rotate a drive shaft. When the drive shaft rotates, a sliding member disposed into a ball rolling groove will move along the path of the ball rolling groove. At the same time, for the restriction of annular fixing member, the component force of the sliding member in an axial direction pushes a driven shaft to move back and forth repeatedly along the axial direction, so that a tool fixed on the driven shaft will also back and forth repeatedly in the axial direction, and thus a high efficient reciprocating tool is achieved.

The present invention relates to a linear drive (1), comprising a drive shaft (10) that can be rotated about a longitudinal axis (X), at least one propulsion element (20) having a propulsion tooth (21), a rack (30), and at least one guide means (40), wherein the at least one propulsion element (20) is coupled to the drive shaft (10) in such a way that the propulsion tooth (21) of said element is pressed into the rack (30) in a cyclical movement (21) during a rotation of the drive shaft (10) about the longitudinal axis (X) to generate an advance, and wherein, when the propulsion tooth (21) of the at least one propulsion element (20) is pressed into the rack (30), the at least one guide means (40) forms an abutment which counteracts the rack (30) for the at least one propulsion element (20). In addition, the present invention relates to a longitudinal adjustment unit and a motor vehicle.

An apparatus to convert linear motion to rotary motion comprising a linear reciprocating member including a track drive member to be coupled to an input device and a rotatable track member including a track to be coupled to an output device wherein the track drive member is disposed to engage the track such that when the input device moves the linear reciprocating member back and forth the track drive member moves along the track rotating the rotatable track member to convert the linear motion imparted to the linear reciprocating member by the input device to the rotary motion of the rotatable track member to operate or drive the output device.

An apparatus to convert linear motion to rotary motion comprising a linear reciprocating member including a track drive member to be coupled to an input device and a rotatable track member including a track to be coupled to an output device wherein the track drive member is disposed to engage the track such that when the input device moves the linear reciprocating member back and forth the track drive member moves along the track rotating the rotatable track member to convert the linear motion imparted to the linear reciprocating member by the input device to the rotary motion of the rotatable track member to operate or drive the output device.

Embodiments of the invention provide a pump assembly for a hydraulic tool. The pump assembly can include a reciprocating element that is configured to move between a retracted position and an extended position, a cam surface in the reciprocating element that can engage cam followers, a rotating element that can receive rotational input, and a base that can at least partially surrounds the rotating element. Movement of the cam followers along the cam surface can move the reciprocating element from the retracted position to the extended position.

An actuator device having a motor driven cam, a follower coupled to an output member and driven by the cam, and a controller for controlling operation of the motor. The cam has a first cam surface, a second cam surface and a lift portion between the first and second cam surfaces. The controller is configured to identify a predetermined point on the lift portion as the follower is moved relative to the cam along the lift portion toward the second cam surface. The controller identifies the predetermined point based on a rate of change in the position of the output member along an output member axis as a function of the rotational position of the cam about a cam axis. The controller controls operation of the motor based on the predetermined point to position the follower on the second cam surface.