One embodiment relates to a pump device with an impeller; a pump housing, including a wall surrounding an interior having an inlet and an outlet. The impeller is provided in the interior of the pump housing. The pump housing includes at least one first part-region, at least two further part-regions and at least one third part-region. The at least one first part-region includes, to an extent of at least 60% by weight, based on the total weight of the first part-region, at least one nonmagnetic material, wherein the at least two further part-regions comprise, to an extent of at least 25% by weight, based on the total weight of the further part-region, at least one ferromagnetic material metal, wherein the at least one third part-region comprises a metal content in a range from 40% to 90% by weight, based on the total weight of the third part-region.

An immersion pump is provided, the pump having an integral housing with an inlet opening on an intake side, an outlet opening on a delivery side, a passage for electrical lines, an electronic unit for processing power and optionally information signals, an electric motor, a pressure chamber and a pump unit. The electronic unit, the electric motor, the pressure chamber and the pump unit may be pre-assembled to an insert, with the pre-assembled insert being supported on one end of the housing. An axial clamping and/or fastening system, in particular a tapered locking arrangement, is provided on the opposite end of the housing.

An alignment device for aligning a vertical pump shaft and coupling hub is provided. The alignment device includes a bracing sleeve comprising a connecting foot configured to removably attach to a connecting arm of a bolting ring, stabilizing nuts, stabilizing bolts, such that the stabilizing bolts screw through the stabilizing nuts to contact the shaft of the vertical pump to secure the bracing sleeve to the shaft of the vertical pump, and a grip pad configured to allow the bracing sleeve to fit flush with the shaft of the vertical pump. The alignment device also includes the bolting ring configured to adjust the coupling hub of the vertical pump, the bolting ring comprising guide nuts, guide bolts, such that the guide bolts screw through the guide nuts to contact the shaft to provide a means for adjusting the alignment between the vertical shaft and the coupling hub.

Blood pump assemblies and methods of manufacturing and operating blood pump assemblies are provided. The blood pump assembly includes a pump and an impeller blade rotatably coupled to the pump. The blood pump assembly also includes a pump housing component sized for passage through a body lumen and coupled to the pump. The pump housing component includes a peripheral wall extending about a rotation axis of the impeller blade. The peripheral wall includes an inner peripheral wall surface and an outer peripheral wall surface. The peripheral wall also includes one or more blood exhaust apertures. Each blood exhaust aperture in the one or more blood exhaust apertures is defined by an inner aperture edge and an outer aperture edge. Each inner aperture edge is chamfered between the inner peripheral wall surface and the outer peripheral wall surface.

Blood pump assemblies and methods of manufacturing and operating blood pump assemblies are provided. The blood pump assembly includes a pump and an impeller blade rotatably coupled to the pump. The blood pump assembly also includes a pump housing component sized for passage through a body lumen and coupled to the pump. The pump housing component includes a peripheral wall extending about a rotation axis of the impeller blade. The peripheral wall includes an inner peripheral wall surface and an outer peripheral wall surface. The peripheral wall also includes one or more blood exhaust apertures. Each blood exhaust aperture in the one or more blood exhaust apertures is defined by an inner aperture edge and an outer aperture edge. Each inner aperture edge is chamfered between the inner peripheral wall surface and the outer peripheral wall surface.

A pump device includes an axially rotating tube having an internal impeller affixed. Each opposite end of the tube has an inlet and outlet so that a powering means to axially engage the tube results in moving of a fluid. The supports or monoblocks at each end of the tube provide for sealing of the fluid passing through the tube and bearing support for the rotating tube. Quick pump disassembly and assembly and the feature of simple interchangeability of impeller types result in a variety of fluids to be pumped and fast and easy pump maintenance.

Blood pump assemblies and methods of manufacturing and operating blood pump assemblies are provided. The blood pump assembly includes a pump and an impeller blade rotatably coupled to the pump. The blood pump assembly also includes a pump housing component sized for passage through a body lumen and coupled to the pump. The pump housing component includes a peripheral wall extending about a rotation axis of the impeller blade. The peripheral wall includes an inner peripheral wall surface and an outer peripheral wall surface. The peripheral wall also includes one or more blood exhaust apertures. Each blood exhaust aperture in the one or more blood exhaust apertures is defined by an inner aperture edge and an outer aperture edge. Each inner aperture edge is chamfered between the inner peripheral wall surface and the outer peripheral wall surface.

A rotating machine. The rotating machine comprises a tubular housing; a drive shaft disposed at least partly inside the tubular housing; a component disposed inside of the tubular housing that is coupled to the drive shaft and configured to do work as the drive shaft rotates; and a shaft stop assembly coupled to the drive shaft comprising a collet disposed around the drive shaft, a compressor flange disposed around the collet and around the drive shaft and engaging with the collet to compress the collet to form a friction fit with the drive shaft, and a compression stop disposed around the compressor flange and around the drive shaft, wherein a first axial end of the compression stop abuts an end of the collet.

A rotating machine. The rotating machine comprises a tubular housing; a drive shaft disposed at least partly inside the tubular housing; a component disposed inside of the tubular housing that is coupled to the drive shaft and configured to do work as the drive shaft rotates; and a shaft stop assembly coupled to the drive shaft comprising a collet disposed around the drive shaft, a compressor flange disposed around the collet and around the drive shaft and engaging with the collet to compress the collet to form a friction fit with the drive shaft, and a compression stop disposed around the compressor flange and around the drive shaft, wherein a first axial end of the compression stop abuts an end of the collet.

A device for changing a pump unit of a centrifugal pump is proposed. The centrifugal pump includes the pump unit and a stator extending in an axial direction. A cup-shaped recess is provided at the first axial end of the stator into which the pump unit is capable of being inserted. The device includes an actuating device with which a mechanical force is capable of being exerted on the pump unit. The mechanical force acts in the axial direction and is directed in such a way that it separates the pump unit from the stator in the axial direction.