A pumping system includes a universal adapter having a back end for attachment to a motor, a forward opening receiving area, an outer magnet assembly rotatable around the receiving area by a motor, and a forward mounting plate surrounding the forward opening receiving area and having mounting features adapted for attachment to the back cover of each of a variety of pump assemblies. The back cover includes mounting features for alignment with the mounting features of the forward mounting plate of the universal adapter.

This pump comprises: a housing; a stator which is disposed in the housing and comprises a coil; and pump gears disposed so as to correspond to the stator, wherein the pump gears comprise an outer gear and an inner gear, which is disposed inside the outer gear, and the outer gear is formed of magnetic material.

This pump comprises: a housing; a stator which is disposed in the housing and comprises a coil; and pump gears disposed so as to correspond to the stator, wherein the pump gears comprise an outer gear and an inner gear, which is disposed inside the outer gear, and the outer gear is formed of magnetic material.

A structure comprising a rotor body, the rotor body including a rotor shaft arranged on one end face of the rotor body, a sub-shaft cavity opened in the rotor shaft, and locating keyways symmetrically opened on both sides inside the sub-shaft cavity; a sub-shaft arranged on the other end face of the rotor body, and sub-shaft locating keyways symmetrically opened on both sides of the sub-shaft.

A pump for supplying an assembly with a pressure fluid, the pump including: a pump housing including a circumferential wall, surrounding the pump's, a first end-face wall and a second end-face wall which delineate the delivery chamber at its end-face sides; a rotor, rotatable about an axis of rotation in the delivery chamber, for forming delivery cells; a pressure outlet which emerges on an outer end-face side of the first end-face wall facing away from the delivery chamber and through which pressure fluid can be discharged from the delivery chamber; an outlet gasket provided on the outer end-face side of the first end-face wall, for sealing off the pressure outlet; a holder in a holding engagement with the outlet gasket and which positions the circumferential wall and the end-face walls relative to each other and axially holds them together as a pre-fitted fitting unit by the holding engagement.

One embodiment of a method for operating an internal combustion engine under a pressure less than atmospheric pressure includes the steps of positioning a vacuum pump such that said vacuum pump is in fluid communication with a crankcase of said internal combustion engine, connecting a discharge of said vacuum pump to a separator, wherein a portion of said discharge of said vacuum pump condenses in said separator, connecting a vapor discharge of said separator to a filter, wherein said filter removes a portion of volatile organic compounds from said vapor discharge, and venting said filter to an ambient atmosphere.

A gear pump includes: an inner rotor having external teeth; an outer rotor having a tubular inner housing portion in which the inner rotor is rotatably housed in an eccentric state, and internal teeth meshing with the external teeth; a first core having a tubular rotor housing portion in which the inner and outer rotors are housed, and a flange portion projecting radially outward from a tube wall of the rotor housing portion; a board-shaped second core having a contact portion in contact with the flange portion in an axial direction, and closing an opening of the rotor housing portion; and a housing opposing the second core and made of a resin. A gap is formed between opposing surfaces of the second core and the housing in a state where the flange portion is in contact with the contact portion and the housing opposes the second core.

An electric screw coolant pump for integration into a temperature control circuit of an assembly of which the temperature is to be controlled. An accommodation housing includes a feeder line and a return line of the temperature control circuit, which open into a cavity. A part of the cavity surrounds a spindle housing and communicates with an outlet opening of the spindle housing as well as the feeder line. A sealing element, which provides a seal between a suction side and a pressure side, is arranged towards an end surface of the axial end of the inserted spindle housing.

A gear pump includes gears received within a housing defining an inlet, an outlet and end plates. The gears have shaft portions on each of two sides of each of the two gears. The shaft portions are mounted in journal bearings. The journal bearings each have a gear side face adjacent one of the two gears. A remote face is on a remote side of the journal bearing remote from each of the two gears. There is a plurality of heat pipes in at least one of the journal bearings. The heat pipes move heat from the gear face of the at least one of the journal bearings to the remote face. The plurality of heat pipes is enclosed by the housing, and extend generally in an axial direction from an end adjacent the gear face to an end adjacent the remote face. A fuel supply system is also disclosed.

A fluid transfer pump that has a housing, a body portion movable within the housing between a first position and a second position, a gear coupled to the housing, a body cavity defined partially between the body portion and the housing, and an aperture defined in the housing that selectively provides a fluid to the body cavity. When the fluid is applied to the body cavity at or above a pilot pressure, the body portion is in the first position adjacent to the gear and when the fluid is applied to the body cavity at a fluid pressure lower than the pilot pressure, the body portion is in the second position and spaced from the gear.