Abstract: The translation block with disengaging nut (15) comprises a translation body (4) which serves as a housing for the nut (15) and which slides along the guide element (7) surrounding the screw. The interior unit comprises the nut (15) formed of two mechanically identical pieces (29, 30) which are attached to the screw (13) and separated by an elastic restraint, and an immobilizing-release device (18) cooperating with blocking grooves (42) on the nut, comprised of two flanges (20, 21) each pivoting on an axle parallel to the screw, elastically joined to the nut and released through the action of a pneumatic force. This invention is of interest to manufacturers of storage devices, for example, screw-mounted lifting mechanisms for vehicle transport trailers.

Abstract: A short coupling with variable geometry for trailers. A coupling which is characterized by the fact that a means of connection with elastic memory is connected in a position of minimum spacing between the trailer (2, 7) and the truck (1), with two symmetrical supports for abutting and pivoting the front face of the trailer relative to the rear face of the truck at the level of each corner, around a vertical axis (29) located as close as possible to each corner, to obtain a trajectory which clears the entire front face of the trailer when it is pivoted while turning a corner. This invention is of interest to manufacturers of transport vehicles.