Abstract: The invention concerns a power puller motor bogie comprising at least a gear motor (6, 10) arranged inside the bogie chassis (4), said gear motor (6, 10) being suspended in said bogie chassis (4) by means of at least two elastic connecting rods (7, 8, 9). Said elastic connecting rods (7, 8, 9) are all supported by said bogie chassis (4). Said elastic connecting rods (7, 8, 9) are such that said suspended gear motor (6, 10) is transversely mobile relative to said vehicle longitudinal direction of movement acts as inertia damper. A shock absorber (12) is fixed between said bogie chassis (4) and said gear motor (6, 10).

Abstract: An electronic power device including at least one sub-system supporting power modules, a capacitor battery connectable to an electrical power supply and being connected to the power modules. The capacitor battery includes one or more capacitors which when a plurality are provided are disposed in parallel between first and second connection plates. Each sub-system has a first face supporting at least one first power module and a second face for supporting at least one second power module and wherein the first plate is connected to each first power module and the second plate is connected to each second power module.

Abstract: A cooling element (2) for power electronic devices comprises heat-exchange fluid inlet and outlet apparatus (29) and an interior volume in which said fluid circulates. The element (2) is made from an electrically insulative material and comprises at least one opening (28) connecting the internal volume (V) to the exterior of the element, a perimeter (24) of the at least one opening (28) forming a seat receiving at least one base (38A) of the power electronic device (36) to be cooled with sealing apparatus (43) between them. The element has a small volume compared to those of the prior art.

Abstract: A process for estimating the speed of a vehicle or of an assemblage of vehicles, based on measuring the speeds of the mechanically independent wheels, while all the wheels are slipping with respect to the rolling surface, the process includes a step using mechanical and kinematic information characteristic of the vehicle or vehicles.

Abstract: A convertible first/second-class seat offering a given number N of seating spaces convertible into a second/first-class N-seater seat, provides N seats with N seat cushions and 2N armrests, the first/second-class convertible seat includes a device for translating at least one of the N seat cushions and at least one of the 2N armrests, the N seat cushions and the 2N armrests remaining mutually aligned, translations T obtained by the translation device allowing the seat cushions that are to be translated to be moved further apart when the second-class convertible seat is converted into a first-class seat, or allowing the seat cushions that are to be translated to be moved closer together when the first-class convertible seat is converted into a second-class seat.

Abstract: A second-class two-seater seat (1) that can be converted into a first-class single-seater seat, and vice versa. The second-class two-seater seat comprises two seats (2) two seat cushions (3) and two armrests (4). The two-seater (1) comprises elements (5) for translating at least one of the seat cushions (3) and at least one of the two armrests (4), the seat cushions (3) and the armrests (4) remaining mutually aligned. Translations of the seat cushions and the armrests are obtained by the translation element's (5), allowing the seat cushions that are to be translated and the armrests that are to be translated to be brought closer together when the second-class two-seater seat is converted into a first-class single-seater seat, or the seat cushions that are to be translated and the armrests that are to be translated to be moved further apart when the first-class single-seater seat is converted into a second-class two-seater seat.