A hydraulic device includes a housing and a closure element arranged thereon. The closure element is connected to the housing by torsional welding.

The present invention relates to a hydraulic device (10) with radial pistons, comprising: a shaft (12) arranged along an axis (1); a cover (13) forming a casing element, the cover and the shaft being free to rotate with respect to one another; a distribution assembly comprising: a multi-lobe cam (14); a cylinder block (15); a distributor (16) configured to exert a thrust force (P) against the cylinder block (15) along the axis (11) of the shaft; an assembly (22) of mechanical bearings comprising at least one mechanical bearing (22a) mounted in radial contact between the cover (13) and shaft (12), said assembly being configured to take up the thrust force (P) exerted by the distributor (16); and a radial contact ball bearing mounted in radial contact between the cover (13) and the shaft (12).

An injector generator for use in geomechanical pumped storage systems includes a power end and a fluid end. The fluid end has one or more fluid chambers each having a fluid inlet and outlet that are controlled by rotary valves. The fluid end can function as a pump or as a motor driven by fluid pressure from the geomechanical storage formation.

An end block is disclosed. The end block may include a body extending between a front side, a back side, a left side, a right side, a top side and a bottom side. Furthermore, the body may include a first bore extending through the body between an inlet port and an outlet port and a cylinder bore extending between a cylinder port and the first bore. Moreover, the body may include a precipitation hardened martensitic stainless steel comprising between 0.08% and 0.18% by weight carbon, between 10.50% and 14.00% by weight chromium, between 0.65% and 1.15% by weight nickel, between 0.85% and 1.30% by weight copper, iron, and a first precipitate comprising the copper.

A base for pumping devices, the base comprising at least one module with which it is possible to mate one pumping device, the module comprising an intake connector and a delivery connector in order to connect respectively the intake and the delivery of the pumping device respectively to a first tubular element and to a second tubular element to which they are essentially perpendicular, the two tubular elements, the first one and the second one, passing through the base from a first lateral face thereof to an opposite second lateral face thereof, from which they face outward in order to be connected, selectively at either face, to a hydraulic system.

A hydraulic unit, in particular a hydraulic unit for a slip-controllable vehicle brake system, includes a housing block, a pump, and a damping device. The pump has an intake side and a delivery side. The housing block has a pump receptacle that holds the pump, a first fluid duct that intersects the pump receptacle in a region of the delivery side of the pump, and a second fluid duct opening into the pump receptacle in the region of the delivery side of the pump, and a first separation point that seals off the first fluid duct from the second fluid duct. The damping device damps pulsations and reduces operating noise of the hydraulic unit without (i) having a detrimental effect on functional characteristics of the unit, in particular on pressure build-up dynamics of the vehicle brake system, or without (ii) jeopardizing a compact construction of the hydraulic unit.

A hydraulic unit, in particular a hydraulic unit for a slip-controllable vehicle brake system, includes a housing block, a pump, and a damping device. The pump has an intake side and a delivery side. The housing block has a pump receptacle that holds the pump, a first fluid duct that intersects the pump receptacle in a region of the delivery side of the pump, and a second fluid duct opening into the pump receptacle in the region of the delivery side of the pump, and a first separation point that seals off the first fluid duct from the second fluid duct. The damping device damps pulsations and reduces operating noise of the hydraulic unit without (i) having a detrimental effect on functional characteristics of the unit, in particular on pressure build-up dynamics of the vehicle brake system, or without (ii) jeopardizing a compact construction of the hydraulic unit.

A skid for supporting a reciprocating pump assembly, the reciprocating pump assembly including a power end frame assembly having a pair of end plate segments and a plurality of middle plate segments disposed between the end plate segments. The end plate segments each have at least a pair of feet and the middle plate segments each having at least one foot. The skid includes a base and a plurality of pads extending from the base. At least a portion of the plurality of pads correspond to the end plate segment feet and at least another portion of the plurality of pads correspond to the at least one foot of each middle plate segment.

A radial piston machine includes a rotor within a housing that is rotatable about an axis, a shaft coupled to the rotor, a distributor which surrounds the shaft and cannot rotate with the rotor and that contacts the rotor in an axial direction, a plurality of brake discs including first brake discs and second brake discs arranged side-by-side along the axis, wherein the first brake discs are coupled to the housing for torque transmission, and the second brake discs are coupled to the shaft for torque transmission, and an actuator configured to releasably exert a brake force in the axial direction on the brake discs. The distributor is located axially between the rotor and the actuator, and the brake discs are located axially between the distributor and the actuator. When the brake force is exerted the brake force is supported by the distributor in the axial direction.

A hydraulic piston machine including a housing, a shaft that is able to rotate relative to the housing, and a cam secured to one of the housing or the shaft. A cylinder block includes pistons that are able to move in the cylinder block opposite the cam in order to generate relative rotation between the cylinder block and the cam. The cylinder block is linked in rotation to the other of the shaft or the housing. A mechanism forms rotation guide bearings for guiding the rotation of the shaft relative to the housing, which mechanism includes a tapered plain bushing interposed between a housing element and an element linked in rotation with the shaft and in which the tapered plain bushing includes a radial through-slit extending through the entire radial dimension of the bushing.