Abstract: A system (40) for transmitting control pressures and/or working pressures from a wheel-hub pressure medium supply (20, 21, 22), in particular from a wheel-hub pressure medium rotary union (21), to a vehicle rim (2) mounted on the wheel hub (1). The system (40) has a receiving part (41), which has a central region (55) with a central opening (44) and at least one extension region (43) projecting radially from the central region (55), at least in some regions. The receiving part (41) can be connected to the wheel hub (1) by means of the at least one radially projecting extension region (43), in a detachable way, and the control pressures and/or working pressures can be transmitted from the wheel-hub pressure medium supply (20, 21, 22) to the opening (44).

Abstract: A device for releasably coupling a trailer to a towing vehicle comprising a support plate mountable on the towing vehicle, and a parallelogram-like arrangement of articulated mechanical members mounted on the support plate including a lifting bar movable between a raised position and a lowered position. A hitching ball that is matable with a socket on the trailer is mounted on the lifting bar. Mechanical means are provided for moving the lifting bar between its raised position and its lowered position. Also, means are provided for locking the device in its raised position.

Abstract: A mast displacement mechanism for a vessel having a hull and an upstanding mast comprising a cradle supported by the hull and defining track structure of a radius of curvature of a first predetermined length, a carriage movable with respect to said track structure and limit structure to limit movement of the carriage, structure on the carriage to connect to the mast at about the hull level for movement of the lower end of the mast together with the carriage relative to the track and lock structure to lock the carriage in a selected position with respect to said track structure for tilting the mast.