Abstract: A piston pump has a crankshaft chamber and a plurality of passages extending from the crankshaft chamber. A crankshaft rotatably mounted in the crankshaft chamber has a rotation axis and a plurality of cams distributed along the axis. Each cam has a plurality of noses, all having a nose radius, circumferentially alternating around the axis with a plurality of heels, all having a heel radius that is less than the nose radius, and a cam material abrasion resistance. A plurality of pistons corresponding to the cams and slidably mounted in the passages each have a shaft end. A sacrificial crown removably connected to the shaft end has a cam engagement side and a crown material abrasion resistance that is less than the cam material abrasion resistance. A plurality of resiliently compressible biases bias the pistons to maintain contact between the cam engagement sides and the cams as the crankshaft rotates.

Abstract: The disclosure relates to a compressor assembly for an air supply unit of a vehicle. The compressor assembly includes: a compressor for providing pressurized air and having a compressor housing, at least one mounting bracket, wherein the at least one mounting bracket is fixed to the compressor housing, and, for each mounting bracket, one bearing for connecting the compressor assembly to a housing structure of the air supply unit. The bearing includes a flexible, hollow bellow, adapted to receive a gaseous medium, wherein the bellow includes at least one mounting feature, in particular recess, adapted to receive the mounting bracket, and the bellow is adapted to be pneumatically charged from an unpressurized state into a pressurized state, wherein the mounting feature is adapted to mechanically connect the bellow to the mounting bracket in a pressurized state via a positive lock.

Abstract: A centrifugal compressor that includes: a rotary shaft; a compressor impeller mounted on the rotary shaft and configured to rotate together with the rotary shaft to compress a fluid; a housing accommodating the rotary shaft and the compressor impeller; and a thrust bearing supporting the rotary shaft in a thrust direction such that the rotary shaft is rotatable. The housing includes: an impeller chamber in which the compressor impeller is accommodated; a thrust bearing accommodation chamber in which the thrust bearing is accommodated; and a partition wall separating the impeller chamber from the thrust bearing accommodation chamber. The partition wall has therein a cooling gas passage through which cooling gas flows to cool the thrust bearing and a cooling water passage through which cooling water flows to cool the partition wall.

Abstract: A turbine housing assembly is disclosed, the assembly including a turbine housing defining a rotational axis for a turbine wheel. The assembly further includes a cartridge that is receivable by the turbine housing, the cartridge including spacer posts and a plate component that includes spacer post openings. The spacer posts may be laser beam welded into the spacer post openings to form laser beam welds as well as define an axial vane clearance between the plate component and a surface of the turbine housing. The turbine housing is further contacted by ends of the spacer posts. Each of the laser beam welds includes a power ramp-up area, an intermediate area and a power ramp-down area, where the power ramp-down area curves away from the power ramp-up area to reduce weld defects.

Abstract: The present disclosure provides a two-stroke pumping method and oil production device, and relates to the technical field of oil production. The oil production device comprises a pump body, wherein the oil production device further comprises a central tube of a hollow structure, and the central tube is partially located in the pump body and coaxially arranged with the pump body; a traveling valve and a standing valve are arranged on the left side and the right side of the outer wall of the central tube respectively, and the traveling valve is arranged between the pump body and the central tube; the standing valve is located outside the pump body; the traveling valve and the standing valve are matched with the pump body and the central tube to form an oil pumping space; and an oil pumping assembly is further arranged in the oil pumping space.

Abstract: A stator cluster is provided and includes inner and outer stator walls, stator vanes radially interposed between the inner and outer stator walls and a stanchion body connected to and extending radially outwardly from the outer stator wall. At least the stator vanes, the outer stator wall and the stanchion body are formed to define internal paths.

Abstract: A rotary electric machine includes a rotor, a stator having a coil, a substrate electrically connected to the coil, a bus bar assembly having a bus bar electrically connecting the coil and the substrate, and a housing having a stator housing portion accommodating the stator and a substrate housing portion accommodating the substrate. The substrate housing portion is radially outside the stator housing portion. The housing has a connection hole radially connecting the stator housing portion and the substrate housing portion. The bus bar assembly radially passes through the connection hole. The bus bar includes a coil connection portion electrically connected to the coil, and a substrate connection portion electrically connected to the substrate. The bus bar assembly includes a bus bar holder that holds the bus bar, and a fixing member that is held by the bus bar holder and fixed to the housing.

Abstract: A pump comprising a bore pump fluid end having a reciprocating element bore, a discharge valve assembly comprising a discharge valve seat and a discharge valve body, and a suction valve assembly comprising a suction valve seat and a suction valve body; a hollow, cylindrical reciprocating element; a hollow reciprocating element adapter comprising a first end having a fluid inlet opposite a second end having a fluid outlet, wherein the second end of the reciprocating element adapter is connected to and in fluid communication with the fluid intake end of the reciprocating element; a pump power end having a push rod connected to the first end of the reciprocating element adapter; and a movable manifold comprising a reciprocating element end and a fluid intake end, wherein the reciprocating element end of the movable manifold is connected to and in fluid communication with the fluid inlet of the reciprocating element adapter.

Abstract: An all-plastic pump comprising an outer cover, a plastic spring, an inner cover and a pressing head. The pump includes an accessory cavity in the outer cover, with a conveying hole. A tubular plastic spring is positioned within the cavity, surrounding the conveying hole. Supporting rods are arranged circumferentially on an inner wall of the plastic spring's port, with one end of the rods connected to a baffle. The inner cover surrounds the plastic spring, and a stop tube is inserted through the supporting rods, with its port sealing against the baffle. The pressing head, mounted in a pressable manner, includes a discharging hole, pressing sheet, and conveying tube. When pressed, the pressing sheet compresses the plastic spring, causing separation between the baffle and stop tube, allowing fluid discharge.

Abstract: A portable pump is provided for negative pressure wound therapy for drawing a vacuum from a wound site via a tube. The pump includes an inlet configured to attach the tube from the wound site; a canister in fluid communication with the inlet for collecting fluids drained from the wound site; and a manually-actuated pump mechanism for creating the vacuum. The pump mechanism includes a vacuum chamber in fluid communication with the canister; a piston disposed in the vacuum chamber; and a pump handle coupled to the piston to move the piston in the vacuum chamber between first and second positions to create the vacuum. The pump handle moving between a retracted position and an extended position. The piston is in the first position when said pump handle is in the retracted position and is in the second position when said pump handle is in the extended position.

Abstract: Disclosed is a motor (14) for a ventilation device (10) of a heating, ventilation and/or air conditioning system of a motor vehicle, comprising a base (34) for mounting the motor (14) on a support (16); a stator (22); a rotor (20) comprising a shaft (30); at least one bearing (74; 80) around the shaft (30) of the rotor (20); and a decoupling ring (58). The decoupling ring (58) comprises an outer part (60) secured to the mounting base (34), an inner part (62) secured to the stator (22) and forming a recess (72; 76) for receiving the bearing (74; 80) around the shaft (30) of the rotor (20), and elastomer material (64) between the inner part (62) and the outer part (60).

Abstract: The movement of the moving gear meshed with the fixed gear in the casing changes the meshing width of the two gears, thereby changing the discharge amount of the pump. By installing a gear block inside the fixed gear, which is an internal gear, and a gear ring and gear ring cover on the outside of the moving gear, the fluid between the two gears is prevented from leaking to the outside. The fluid can pass between the two gears from or to the outside through the fluid holes in the fixed gear and the fluid inlets in the pumping chamber in the casing. The part of the fixed gear that is not engaged with the moving gear can be used as a hydraulic chamber.

Abstract: An axial flux motor water pump comprising a housing, a cover attached to the housing, a stator mounted within the housing, the stator comprising a plurality of stator poles mounted in a ring, each stator pole comprising an electric wire winding, a rotor journaled to the housing in cooperating relation to the stator on a single bearing, an impeller fixed to an end of the rotor, a plurality of magnets mounted to an end of the rotor in cooperative relation to the stator poles, a seal between the rotor and housing whereby the stator and magnets are in a dry zone, the stator enrobed in thermal potting within the housing; and power electronics contained in the cover. The rotor portion of the rotor may be manufactured in a sintering process.

Abstract: A hybrid pump apparatus (100) having a pump subassembly having an inlet and an outlet an electrical drive (110) arranged to selectively drive the pump subassembly, a mechanical drive comprising a driven member (104) configured to receive a drive torque; and a clutch (160) in a load path between the driven member and the pump subassembly, the clutch being movable between a first condition in which the driven member drives the pump subassembly and a second condition in which the driven member can rotate freely relative to the pump sub assembly in which the clutch is a dog clutch.

Abstract: A centrifugal compressor includes a compressor impeller, a motor, an inverter, a housing including a motor chamber and an inverter chamber, a conductive member, an insertion hole, and a resin member sealing the insertion hole. A pressure in the motor chamber is higher than that in the inverter chamber. The resin member includes a first resin portion fixed to the housing and a second resin portion which is covered with the first resin portion and which covers the conductive member, the second resin portion having a Young's modulus smaller than that of the first resin portion. The first resin portion and the second resin portion, and the second resin portion and the conductive member are coupled by insert-molding.

Abstract: An electric compressor includes a compression member compressing fluid drawn from a suction chamber and discharging the compressed fluid to a discharge chamber, an electric motor driving the compression member, an inverter driving the electric motor, a housing in which the suction chamber and the discharge chamber are formed and that accommodates the compression member, the electric motor, and the inverter, the housing including an inverter accommodation portion, a soundproof cover covering an outer surface of the housing, and a nameplate including predetermined information. The nameplate is provided on at least one of a first outer surface of the outer surface corresponding to the inverter accommodation portion and a second outer surface of the outer surface corresponding to the discharge portion. The soundproof cover has a window through the nameplate is viewed and which is formed in a part of the soundproof cover corresponding to the nameplate.

Abstract: A lubricant-sealed vacuum pump configured to pump fluid from an inlet to an exhaust, method and filter are disclosed. The lubricant-sealed vacuum pump comprises: a rotor; a filter for filtering lubricant from fluid to be output by the pump; control circuitry for controlling a speed of rotation of the rotor, the control circuitry being configured to control rotation of the rotor, such that the rotor rotates at a reduced speed initially when a pressure at the inlet is high and rotates at a higher operational speed when the pressure at the inlet has reduced.

Abstract: A wet rotor circulating pump implementing an integral magnetic filter for removing suspended contaminates from the water being circulated.

Abstract: A driveshaft assembly for a compressor includes an unloader assembly and a driveshaft. The unloader assembly includes an unloader and a counterweight. The unloader assembly is rotationally supported by a bearing. The unloader includes a flank surface that is slidably engaged with a flank surface on the driveshaft.

Abstract: The packing seal for a piston compressor, having a longitudinal axis L as well as, following one after the other in the direction of the longitudinal axis L, a fastening part and a cylindrical part, wherein a magnetic bearing and at least one chamber ring with a sealing ring arranged therein are arranged following one after the other in the direction of the longitudinal axis L in the cylindrical part, wherein the magnetic bearing includes at least one controllable electromagnet.