Abstract: An intercommunication device mounted between the two oppositely-facing open ends of two coupled railway cars is constituted by a series of rings of generally rectangular shape consisting alternately of rigid rings and flexible rings suitably attached to each other so as to constitute a flexible intercommunication tunnel, the open ends of which are attached respectively to the open ends of the railway cars. The tunnel permits free and unrestricted movement of passengers from one car or vehicle to another in all types of coupled wheeled units such as railway trains, articulated road vehicles, airport passenger bridges and the like.

Abstract: The bogie of a railroad vehicle, in particular for city transportation, is provided with axles which can be oriented substantially along the radius of the curves of a railroad track. The primary suspension of the bogie comprises springs and guiding link-arms of variable length constituted by hydraulic jacks for modifying the angle of the axle with respect to the bogie frame according to the radius of the curve being negotiated.

Abstract: A cylindrical tank for land, sea or air transport is attached within a container frame by means of a system comprising cradles and upright members, a pair of first coupling devices between each cradle and a corresponding annular strengthening rib of the tank for securing the tank in the longitudinal direction and allowing one degree of freedom in the transverse and vertical directions. A pair of second coupling devices between the tank and the upright members limits and damps the displacements in the vertical and transverse directions.