Abstract: A piston pump assembly for a hydraulic power vehicle braking system including an electric motor, a planetary gear, a worm gear, and a piston displaceable in a cylinder. For an anti-rotation protection of the piston in the cylinder, the piston includes a ring rotationally-fixed thereto by a form fit and connected thereto by forming, including semicircular grooves at its outer circumference, in which cylinder pins engage, which are situated fixed axially-parallel in the cylinder.

Abstract: A compressor module includes: a driver having an output shaft which is rotationally driven around an axis; a compressor which is disposed side by side in an axial direction in which the axis extends with respect to the driver, and to which rotation of the output shaft is transmitted; a base plate which supports the driver and the compressor from below in a vertical direction; and a storage tank disposed below the base plate and having a tubular shape that extends in a direction including the axial direction, the storage tank being configured to store lubricating oil for the driver and the compressor.

Abstract: An electrical submersible pump assembly for pumping well fluid from a well has a motor and a pump. The motor having a motor shaft that drives a pump shaft of the pump. A thrust bearing unit between the motor and the pump has a thrust bearing shaft that rotates a thrust runner in sliding engagement with a non-rotating thrust bearing base. A pump shaft coupling couples the thrust bearing shaft with the pump shaft. A motor shaft coupling couples the thrust bearing shaft with the motor shaft. At least one of the couplings has a one-way clutch that allows forward direction rotation of the thrust bearing shaft and prevents reverse direction rotation.

Abstract: A fan assembly, including motor cooling configurations and/or integrated controller configurations and associated methods are shown. Some examples of fan motors shown include electronically commutated motors that may include integrated controller circuitry. A number of cooling configurations are shown that may be used individually or in combination to provide cooling to a motor in a fan assembly.

Abstract: An energy-saving pump, and control system for the pump comprises: a pump body arranged to receive steam from a steam generator; a steam transferor for opening/closing a pipeline between the pump body and the steam generator; and a suction valve for opening/closing a pipeline between the pump body and a water source, wherein the steam transferor is closed to receive steam and then the suction valve is opened to suction water from the water source.

Abstract: A positioning structure of a motor of an air compressor contains: a base, a cylinder, the motor, and a transmission mechanism. The base includes a first locating orifice and a second locating orifice. The cylinder includes an air storage seat. A small-diameter gear is fitted on the motor via the first locating orifice. A bearing housing of the motor is accommodated in the first locating orifice. The transmission mechanism actuates a piston to move in the cylinder reciprocately. The base includes two symmetrical elongated plates having two hooks respectively and includes two symmetrical arcuate retainers. An outer wall of the motor is retained by the two symmetrical arcuate retainers, and the two hooks are engaged with the magnetic coil.

Abstract: An electric pump includes: a motor; an impeller rotated by the motor; a motor housing portion that houses the motor; an impeller housing portion that houses the impeller and is positioned at one side with respect to the motor housing portion in a rotation axis of the motor; an introduction pipe portion that introduces a fluid into the impeller housing portion and is positioned at the one side with respect to the motor housing portion; a discharge pipe portion that discharges the fluid from the impeller housing portion; a printed circuit board electrically connected to a coil of the motor and positioned at the one side with respect to the motor housing portion; and an electronic part mounted on the printed circuit board, wherein the printed circuit board includes a cutout portion and faces the impeller housing portion.

Abstract: A reciprocating plunger pump fluid end having increased material thicknesses in typical high stress concentration areas includes locating valves in spherically segmented shaped suction and discharge bores adjacent to chamfered transition areas to provide for reduced stress concentrations, resistance to fatigue failure and erosion and ease of access for maintenance. Among other features the housing includes a valve retainer assembly integrally mounted inside the housing which includes a profile to reduce stresses in the bores and facilitate access for replacement of internal components.

Abstract: A mud pump is provided that includes a pump shaft having substantially circular eccentric lobes. Each lobe is rotatably mounted in a connecting rod that, in turn, moves a slide in a horizontal and linearly manner. A pony rod operatively couples a pump fluid end module to one or both sides of each slide frame and a pump fluid end module. As the pump shaft turns, each lobe causes the slide to move side to side. As the slide moves side to side, each pony rod operates a pump fluid end module whose outputs can be coupled to a common manifold.

Abstract: A guide vane according to the invention for a guide vane ring of a turbomachine has a vane element as well as a guide vane plate for its support on an inner ring. The guide vane plate has a cover surface facing the vane element, a base surface lying opposite to the cover surface, and an edge surface joining the cover and base surfaces. In a first region, the edge surface forms a chamfer of the vane plate, and in a second region, which forms the edge of a sector of the guide vane plate that is different from that of the first region, the edge surface runs along a cylindrical surface. A method comprises inserting a plurality of guide vanes according to the invention into respective uptakes in an inner ring.

Abstract: A portable hydraulic-powered air compressor system detachably connected to a hydraulic power system of a vehicle may include a reciprocating compressor. The reciprocating compressor may include a compression cylinder, and a compressor piston assembly that may be movably disposed within the compression cylinder. Opposite sides of the compressor piston assembly may respectively define a rod chamber and a front chamber in an interior of the compression cylinder. The front chamber may include an air intake port. The compressor piston assembly may include a one-way valve that may be configured to fluidically connect the rod chamber and the front chamber in response to an air pressure in the front chamber being higher than an air pressure in the rod chamber. The hydraulic-powered air compressor system may further include a hydraulic actuating mechanism detachably connected to the hydraulic power system.

Abstract: In an illustrative embodiment, a control system to synchronize a number of slave fans to a master fan may include a master voltage controlled oscillator to receive input voltages, rotate master blades of the master fan pursuant to the input voltages, and provide reference synchronization signals; a slave voltage controlled oscillator to receive the input voltages modified by a gain, rotate slave blades of the slave fan at slave fan speed pursuant to the input voltages, and provide slave synchronization signals; and a phase lock loop configured to receive the reference synchronization signals and the slave synchronization signals, provide a comparison between the reference slave synchronization signals, and provide the gain pursuant to the comparison between the reference synchronization signals and the slave synchronization signals.

Abstract: This disclosure relates to a hydraulic pump system for handling a slurry medium comprising at least two reciprocating positive displacement pumps, both pumps being arranged for alternating intake of slurry medium via a suction inlet and discharge of slurry medium via a discharge outlet, and piston/cylinder discharge valves for alternating closing and opening each discharge outlet. In a first aspect, a hydraulic pump system for handling a slurry medium, comprising at least two reciprocating positive displacement pumps, both pumps being arranged for alternating intake of slurry medium via a suction inlet and discharge of slurry medium via a discharge outlet, and piston/cylinder discharge valves for alternating closing and opening each discharge outlet, as well as control means for controlling the alternate closing and opening of both piston/cylinder discharge valves, such that during operation no volume difference occurs in the discharge of slurry medium is disclosed.

Abstract: A piston pump, in particular for a motor vehicle, includes a piston that is movably mounted in a housing. The piston pump further includes a linear actuator for moving the piston in a first direction. The piston pump further includes a return spring for moving the piston in a second direction. The end face of a first end of the piston delimits a first pressure chamber that is associated with a first hydraulic circuit. The end face of a second end of the piston delimits a second pressure chamber.

Abstract: A reciprocating pump assembly that includes a power end, first and second stay rods coupled to the power end, and a fluid end that includes a mounting flange coupled to the first and second stay rods and a packing nut assembly. The packing nut assembly includes a packing nut threadably engaged with the mounting flange and comprising a gear pattern, and a retention assembly that includes a collar, an alignment arm, a pawl, and a biasing assembly. The collar extends around the first stay rod. The alignment arm is coupled to the collar and shaped to contact the second stay rod. The pawl is pivotally coupled to the alignment arm or the collar and positioned to engage the gear pattern to allow the packing nut thread into the mounting flange and prevent the packing nut from unthreading. The biasing assembly biases the pawl into engagement with the gear pattern.

Abstract: The invention relates to pump engineering and, in particular, to submersible pump assemblies driven by a sealed submersible electric motor for pumping well fluids. The submersible pump assembly comprises a pump, a motor, and a magnetic coupling comprising driving and driven half-couplings having permanent magnets and affixed to the motor rotor and pump rotor, respectively, a protective screen arranged between the rotors, and an intermediate bearing support. The assembly further comprises a magnetic coupling cooling device for cooling the magnetic coupling. When well fluid is a mixture of water and oil, a separator is preferably used as the magnetic coupling cooling device. When producing low-viscosity well fluid, the coupling is sufficiently cooled without additional separation of the produced fluid, and for this reason a set of pumping stages may be used as the cooling device. The invention increase operation time of the pump assembly at high shaft speeds and high shaft torques.

Abstract: A pressure-driven metered treating chemistry dispensing pump for a laundry treating appliance having a housing having first, second and third chambers, with the first and second chambers each in fluid communication with the third chamber; a fluid inlet fluidly coupling a first fluid to the first chamber; an outlet fluidly coupled to the third chamber; a piston disposed in the housing; wherein, when the piston moves in a first direction in response to the first fluid entering the first chamber via the fluid inlet, the second chamber decreases in volume thereby ejecting at least some of the second fluid from the second chamber into the third chamber, and when the piston moves in a second direction, different from the first direction, the first chamber decreases in volume thereby ejecting at least some of the first fluid from the first chamber into the third chamber to mix the at least some of the first fluid and the at least some of the second fluid to form a mixture in the third chamber, which can be emitted t

Abstract: A centrifugal compressor includes an impeller and a housing having a scroll passage of spiral shape formed on an outer peripheral side of the impeller. When a circumferential-directional position of the scroll passage is represented by an angular position with respect to a scroll end of the scroll passage, and in a cross-section obtained by cutting the scroll passage along a plane including a rotational axis of the impeller at a circumferential-directional position where the angular position is ?, F(?) is defined as: F(?)=(A/R)/r, where A is a cross-sectional area of the scroll passage, R is a distance from the rotational axis to a scroll center of the cross-section of the scroll passage, and r is a radius of the impeller, 0.35?F(360°)?0.65, and 0.08×F(360°)?F(60°)?0.4×F(360°).

Abstract: A pressure amplifier (1) is described comprising a housing (2), an amplification piston (5) in the housing (2) having a high pressure area (9) in a high pressure chamber (5) and a low pressure area (8) in a low pressure chamber (3), and a switching valve (11) having a pressured control valve element having a larger pressure area (16) and a small pressure area (17). Such a pressure amplifier should have a high operating frequency. To this end the valve element (10) and the amplification piston (5) are located in a same bore (3, 4) in the housing (2).

Abstract: A piston compressor includes a housing including a cylinder block having cylinder bores. The housing has a discharge chamber, a swash plate chamber, and an axial hole. The piston compressor includes a drive shaft, a fixed swash plate, a piston, a discharge valve, a rotating body, and a control valve. The rotating body has a second communication passage that communicates with first communication passages intermittently by rotation of the drive shaft. A flow rate of refrigerant gas discharged from the compression chambers into the discharge chamber decreases when a communication angle around the axis becomes large per a rotation of the drive shaft depending on a position of the rotating body in the direction of the axis. The piston compressor includes a suction throttle that decreases the flow rate of refrigerant gas in the compression chamber when the communication angle becomes large based on the control pressure.