Patent · US Active

Pump for pumping liquid as well as an impeller assembly

US9828999B2 · kind B2 · utility

4Cited by

8References

12Claims

0Family size

Assignee

Xylem IP Management S. à r.l. · LU

Inventors

Patrik Andersson · Västerås, SE
Stefan Ramström · Vallentuna, SE

Key dates

Filing date	Aug 6, 2014
Grant date	Nov 28, 2017
Priority date	—
Expiry date	Aug 6, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D29/528
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An impeller assembly and a pump for pumping a liquid, including a pump chamber and an impeller arranged to rotate in the pump chamber, the impeller being suspended in a lower end of an axially extending drive shaft unit, wherein the lower end of the drive shaft unit is received in a cylinder-shaped recess of the impeller, wherein the impeller is displaceable back and forth in the axial direction in relation to the drive shaft unit. The impeller further includes an axially extending hole that connects the cylinder-shaped recess and the pump chamber and that the drive shaft unit includes an axially extending pin that projects from the lower end of the drive shaft unit, wherein the pin is arranged in the hole.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.