Abstract: The invention relates to a rotary machine with pistons (22) and a turret (25), including: —a frame (2), through which a shaft (1) extends, having a geometrical axis x-x? and mounted in a stationary manner relative to the frame (2); —a thrust plate (9) rotatably mounted on the shaft (1); —an oscillating plate (15) bearing on the thrust plate (9); —a torsion bar (18), a first end of which is pivotably connected to the frame (2) and a second end of which is pivotably connected to the oscillating plate (15); —a spherical female bushing (14) rigidly connected to the oscillating plate (15) and pivotably connected around a spherical male knuckle centered on the shaft (1), the knuckle including a spherical male bushing (10) rotatably mounted relative to the shaft (1), characterized in that the rotary machine includes a means for rotating the spherical male bushing (10) about the geometric axis x-x?.

Abstract: The invention relates to a rotary machine with pistons (22) and a turret (25), including:—a frame (2), through which a shaft (1) extends, having a geometrical axis x-x? and mounted in a stationary manner relative to the frame (2);—a thrust plate (9) rotatably mounted on the shaft (1);—an oscillating plate (15) bearing on the thrust plate (9);—a torsion bar (18), a first end of which is pivotably connected to the frame (2) and a second end of which is pivotably connected to the oscillating plate (15);—a spherical female bushing (14) rigidly connected to the oscillating plate (15) and pivotably connected around a spherical male knuckle centered on the shaft (1), the knuckle including a spherical male bushing (10) rotatably mounted relative to the shaft (1), characterized in that the rotary machine includes a means for rotating the spherical male bushing (10) about the geometric axis

Abstract: Rotary piston and barrel machine comprising a thrust plate inclined in relation to its geometrical spin axis which coicides with the geometrical axis of the barrel, the central part of the inclined plate comprising a spherical bearing which revolves freely around a fixed central toggle type joint anchored to the central part of the barrel, whereas the barrel is connected to a rigid peripheral housing, the central toggle type joint being integral with a rigid half shaft connected to the rear part of the housing, characterized by at least one rod connected rigidly to the toggle type joint, as well as to a piston disposed inside a bore of the barrel and subjected to the action of an under-pressure fluid so that at least one part of the axial stresses applied to the toggle type joint is transmitted to the barrel without being applied to the housing.

Abstract: The invention relates to a pump with a barrel and an oscillating plate having a fixed central pivot. The pivot is solidary with two half-shafts which may be axially prstressed.The invention creates a balanced floating thrust bearing for the pivot bearing.

Abstract: This invention provides in centrifugal motor pumps and the like a safety structure embodying a bearing bushing coaxially mounted with respect to the pump shaft in a space between the shaft and the body of the pump, with the bushing designed to act as a hydrodynamic bearing in the case of decentering of the pump shaft or similar disfunction only.

Abstract: This disclosure is concerned with improvements in hydrostatic guide bearings of a shaft in which the journal of the shaft takes on the form of a sleeve and the bearing comprises a first and a second set of chambers placed within concentric races respectively opposite the internal and external walls of the journal.

Abstract: In a hydrostatic bearing for pumps of fluid under pressure which is supplied by the pumped fluid, the operation of the bearing is ensured regardless of the conditions present in the pump.To this end, the nozzles of fluid supply of the openings of the race bearing are connected upstream to two compartments of the pump containing the fluid under two different pressures, through the intermediary of a ball valve, and two expansion chambers are arranged in the race on one side and the other of the openings and are connected downstream to the two compartments through the intermediary of ball valves.

Abstract: An improved lubrication system in a pump including a blocking rod mounted between seats on the pump frame and the swash plate, the rod having a channel therethrough from one seat to the other and a fluid conduit coupling the channel to a source of lubrication fluid at the seat on the pump frame. Each piston is connected to the swash plate by an axial connecting rod and the swash plate is provided with internal conduits coupling each rod seat on the swash plate to the swash plate blocking rod seat to provide lubrication to the connecting rods. Each connecting rod can also be provided with an internal channel to conduct fluid to its seat at the piston end.