Abstract: This vehicle comprises a body and a levitation device, the body bearing in operation on the levitation device which comprises a first levitation module and a second levitation module connected to the body, and capable of moving to allow the modules to turn relative to the body. The vehicle comprises means for synchronizing movement of the levitation modules comprising a first hydraulic ram between the first module and the body, a second hydraulic ram between the second module and the body, and a fluid-flow circuit connecting the first and second rams to synchronize the actions of the rams. Application to magnetic levitation rail vehicles, for example.

Abstract: The vehicle adapted to move along a rail comprises a body and a levitation system, the body resting in operation on the levitation system in a main bearing direction via suspension means between the body and the levitation system to allow relative movement between the body and the levitation system in the main bearing direction. The suspension means comprise a pneumatic diaphragm suspension including a first connector connected to the levitation system, a second connector fastened to the body, and a deformable diaphragm defining a sealed cavity receiving a compressible fluid between the first and second connectors. Application to magnetic levitation rail vehicles.

Abstract: The vehicle adapted to move along a rail comprises a body and a levitation system, the body resting in operation on the levitation system in a main bearing direction via suspension means between the body and the levitation system to allow relative movement between the body and the levitation system in the main bearing direction. The suspension means comprise a pneumatic diaphragm suspension including a first connector connected to the levitation system, a second connector fastened to the body, and a deformable diaphragm defining a sealed cavity receiving a compressible fluid between the first and second connectors. Application to magnetic levitation rail vehicles.

Abstract: This vehicle comprises a body and a levitation device, the body bearing in operation on the levitation device which comprises a first levitation module and a second levitation module connected to the body, and capable of moving to allow the modules to turn relative to the body. The vehicle comprises means for synchronizing movement of the levitation modules comprising a first hydraulic ram between the first module and the body, a second hydraulic ram between the second module and the body, and a fluid-flow circuit connecting the first and second rams to synchronize the actions of the rams. Application to magnetic levitation rail vehicles, for example.

Abstract: The wheel which is for use with a rail presenting an angle of inclination of {fraction (1/20)}, includes a running zone for coming into contact with the rail, a lateral flange projecting radially outwards from the tread, and a link portion presenting conicity that increases continuously going towards the flange. In cross-section, the running zone presents a straight segment of conicity lying in the range 0.052 to 0.058, thereby ensuring satisfactory self-centering for the rail vehicle.

Abstract: A bogie for rail vehicles with wheels with a variable track includes a chassis supporting a body of the vehicle and four wheels connected to the chassis by articulated arms. Each wheel is movable transversely relative to the articulated arm to occupy at least two positions corresponding to two different track gages and the arms are able to pivot about a pivot with a movement damped by primary suspension members. At least one articulated arm transmits rotation of the wheel to a secondary shaft and the secondary shaft is constrained to rotate with a braking and/or traction system.

Abstract: A bogie for rail vehicles with wheels with a variable track includes a chassis supporting a body of the vehicle and four wheels connected to the chassis by articulated arms. Each wheel is movable transversely relative to the articulated arm to occupy at least two positions corresponding to two different track gages and the arms are able to pivot about a pivot with a movement damped by primary suspension members. At least one articulated arm transmits rotation of the wheel to a secondary shaft and the secondary shaft is constrained to rotate with a braking and/or traction system.

Abstract: A tilting apparatus for tilting a body (4) of a vehicle, the apparatus being disposed in a bogie underframe, and secondary suspensions (3) being disposed under the body (4) of the vehicle, the tilting apparatus being characterized in that it includes first and second tilt-control actuators (1, 2) disposed rigidly and vertically in the bogie, the secondary suspensions (3) lying under the body (4) of the vehicle and on the tilt-control actuators (1, 2), a re-centering actuator (5) secured via one of its ends to the bogie underframe (6) and via its other end to the body (4) of the vehicle, and an anti-roll bar (7) disposed under the body (4), the tilting apparatus being provided neither with an inclination cross-member, nor with cross-member suspension connection rods.

Abstract: The present invention relates to a link tilt device for a tilting cross-member suitable for being disposed in a bogie frame in such a manner as to be suspended from the bogie frame by means of the links, secondary suspensions being disposed between the tilting cross-member and the vehicle body, wherein the middle cross-members of the bogie frame, the links, and the tilting cross-member form an assembly such that the angular stiffness between the bogie frame and said vehicle body is a characteristic that is predetermined.

Abstract: A motor bogie includes a bogie chassis and a crossbeam. The crossbeam pivots about a vertical axis relative to the bogie chassis, bears on a side friction block and is rotationally coupled by links to a body mounted on the motor bogie. An additional coupling is provided between the chassis and the body by an anti-yaw damper.