A roller coaster installation comprising a stretch of water, along which runs a train of vehicles (104) provided laterally with hydrodynamic brakes comprising a fin (102) or a nozzle, becoming immersed in the mass of water (A) and discharging this in the form of rising sprays (B).

Self-supporting wear rings (1a, 1b) for fluid flow machines are arranged at a radial sealing gap (18) to a rotor (9), and have an outer jacket surface (3) provided with a wear surface (2). The wear rings (1a, 1b), which are fixed in the axial direction, consist of a material with lower thermal expansion coefficients than their support and lie hollowly on their inner jacket surface, with a first conical holder surface (8) encountering with the apex of its cone a second holder surface (8"), which ...

The installation for amusement park, comprises at least one vehicle designed in such a way as to be able to accommodate at least one passenger in at least one seat, associated with at least one retention device. The retention device comprises a pivoting bar mounted on a retention element intended to retain the passenger in the seat. The retention element features a complex spatial shape, of which the lower part, intended to come in contact with the passenger's thighs, comprises for this purpose ...

The installation for amusement park, referred to as roller coaster, comprises a circuit made up of rails (6), mounted on supports (10), themselves fixed on a carrier beam (11), on which one or more vehicles run, designed to run on the rails, as opposed to a suspended roller coaster, and at least one station for the embarkation and disembarkation of passengers. Each vehicle comprises a main beam (1), at least one transverse chassis element (2) on which are mounted, on the one hand, wheels (3, 4, ...

The amusement ride comprises at least one seat suspended on a bogie moving along at least one rail. The seat is provided with a harness for the restraint of at least one passenger in the seat. The seat-harness unit is shaped so as to form a restraint imprisoning the passenger's body when the harness is in the closed position, each of the passenger's four limbs emerging from said restraint through a separate opening, so that the passenger is suspended with his legs in mid-air without a wall or a ...

The invention concerns a stent 1 for the bracing and/or holding-open of a body cavity having a tube 2 made from an elastic material, a tubular weave 3 comprising filaments 5 seating in close adjacency to the outer surface of the tube 2 as well as a coating 4 applied to the outer surface of the tube 2 which attaches the weave 3 to the outer surface of the tube 2. The coating 4 is adapted to have a structured outer surface dominated by the weave 3. The stent 1 in accordance with the invention can ...