A power actuator is configured for a hinged vehicle door with a generally vertical hinge axis. The power actuator includes a motor-gearbox assembly, a slip clutch, a friction brake, a threaded spindle with a motor-side bearing, and a spindle nut affixed to a spindle tube, configured to travel along the threaded spindle during a rotation of the spindle. The slip clutch and the friction brake are operatively positioned between the motor-gearbox assembly and the motor-side bearing. The power actuator does not need to include a biasing element acting on the spindle nut toward an extended position because such a biasing element is unnecessary where the hinge axis is generally parallel to the direction of gravity.

The disclosure relates to a drive arrangement for a flap of a motor vehicle, comprising a linear drive for producing drive movements and comprising a transmission arrangement, which is coupled to said linear drive, for transmitting the drive movements, a compensating arrangement being provided which couples two drive elements of the drive arrangement to each other in terms of drive, and, when a limit load between the two drive elements is exceeded, the compensating arrangement permitting a guided compensating movement between the two drive elements. It is proposed that the transmission arrangement provides the compensating arrangement.

A door module for use with a door system, and applications thereof, are disclosed. The door module comprises a door frame and a door articulated to the door frame, a touchless door module comprising a door motor assembly, a door locking assembly, a control assembly and a power source. The door motor assembly can be configured for displacing the door between an open position and a closed position, responsive to a door opening signal or a door closing signal, respectively, emitted from the control assembly. The locking assembly can be configured for displacing a locking bolt between a locked position at which it is engageable with a locking strike, responsive to a locking signal emitted from the control assembly, and an unlocked position, responsive to an unlocking signal emitted from the control assembly. The control assembly comprises in some embodiments at least one touchless inside sensor, wherein an entrance signal includes a signal received form the at least one inside touchless sensor, resulting in generating a door closing signal and an occupied signal, and an exit signal received by the at least one inside sensor resulting in generating a door opening signal. The control assembly may further comprise a signaling system configured for emitting noticeable door mode indicia responsive to door parameters.

A truck box cover device extended and retracted in a transmission manner includes a clutch type driving gearbox, a roller shutter shaft and roller shutter cover rail support frames. The clutch type driving gearbox is connected with the roller shutter shaft. The roller shutter shaft is stripped winding shaft and comprises a transmission end and a roller shutter cover mounting shaft. One end of the transmission end is connected with the clutch type driving gearbox and is driven by the clutch type driving gearbox to correspondingly rotate, and the other end is connected to the roller shutter cover mounting shaft. One end, away from the transmission end, of the roller shutter cover mounting shaft is fixed to the interior of a driven bearing.

A gatebox system for delivering fire retardant fluid from a firefighting aircraft. A first and second gate opening are formed through a lower portion of a gatebox. The gates are hingedly connected along edges of the openings. One or two drive shafts in the gatebox are rotatable in gates-closing and gates-opening directions. Crank arms are fixed to the drive shafts and coupled to the gates by connecting links, which define an over-center geometry while the gates are at a closed position, such that weight of the fluid on the first gate induces torque on the drive shaft in the gates-closing direction. Rotation of the drive shafts in the gates-opening direction enables control of the fluid flow from the hopper according to an angular position of the drive shaft.

A system for operating at least one magnetorheological fluid clutch apparatus may, in a first mode, vary an amount of torque transmission between a driving member and a driven member in the at least one magnetorheological fluid clutch apparatus by actuating at least one coil in the at least one magnetorheological fluid clutch apparatus. In a second mode, the system may cause torque transmission between the driven member and the driving member by setting a desired remanent magnetization level in a magnetic component of the at least one magnetorheological fluid clutch apparatus by actuating the at least one coil in the at least one magnetorheological fluid clutch apparatus.

An automated window mechanism is disclosed having an electric motor attached to a sliding panel of a window configured to open and close the window by moving the sliding panel. The electric motor has a locked state in which the electric motor and sliding panel are stationary. The automated window mechanism also includes a monitor configured to detect an external force applied to the sliding panel while the electric motor is in the locked state. In response to the monitor identifying the external force while the electric motor is in the locked state the electric motor opposes the external force to prevent unwanted movement of the sliding panel. A method and system for preventing unwanted movement of an automated window are also disclosed.

In one form, the invention relates to a door drive for a door, the door drive comprising: a drive motor, a drive shaft drivable and thereby rotatable by the drive motor, a clutch, and a threaded spindle which is drivable and thereby rotatable by the drive shaft via the clutch, wherein the clutch comprises: a catch element, an actuating element which, by rotating the drive shaft, is drivable and thereby rotatable around an actuation rotational axis by the drive shaft, the actuating element comprising at least one first actuation area, and a clutch element which comprises at least one second actuation area corresponding to the first actuation area, wherein the clutch element is translationally movable along the actuation rotational axis relative to the catch element between at least one decoupling position in which the clutch element is decoupled from the catch element, and at least one coupling position in which the clutch element is coupled to the catch element, and wherein a relative rotation between the actuating element and the clutch element, the relative rotation being effectable by rotating the drive shaft, can be converted, by means of the actuation areas, into a translational movement of the clutch element from the decoupling position into the coupling position, the translational movement taking place along the actuation rotational axis, relative to the catch element, relative to the actuating element and in the direction of the catch element.

A drive assembly for motorized adjustment of an adjusting element of a motor vehicle. The drive assembly includes a drive having a rotational motor unit and a feed gearing drivingly arranged downstream of the motor unit for generating drive movements along a feed gearing axis in first and second adjusting directions, the drive includes a clutch having a first clutch element, rotationally fixed to a driveshaft of the drive, and a second clutch element, rotationally fixed to an output shaft of the drive, in a state in which they are drivingly coupled to one another, the clutch elements transmit rotational movements from the driveshaft to the output shaft, to generate the drive movements of the feed gearing. The clutch is designed as a curved tooth coupling.

A refrigerator comprising a door rotatable about a hinge shaft. A door opening and closing apparatus comprises a drive motor, a first gear configured to receive power from the drive motor, a second gear, spaced apart from the first gear, configured to transmit a rotational force to the hinge shaft, a clutch gear configured to be rotatable around a rotation axis of the first gear, and configured to transmit power of the first gear to the second gear based on a position of the clutch gear around the rotation axis of the first gear, and a position detection sensor configured to detect the position of the clutch gear so that while the clutch gear is at the position, the clutch gear transmits the power received from the first gear to the second gear which transmits the rotational force to the hinge shaft to open and close the door.