Patent · US Expired

Slide bearing for a centrifugal pump

US6981799B2 · kind B2 · utility

5Cited by

4References

6Claims

0Family size

Assignee

KSB Aktiengesellschaft · DE

Inventors

Hans-Dieter Sturm · Gerolsheim, DE
Frank Sehr · Birkenheide, DE
Anja Dwars · Wendelstein, DE

Key dates

Filing date	May 23, 2003
Grant date	Jan 3, 2006
Priority date	—
Expiry date	May 23, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S384/913
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A slide bearing for a centrifugal pump in which the slide bearing is lubricated by the pumped medium and is composed of a stationary part disposed in the housing of the centrifugal pump and a rotatable part which is supported by the shaft of the centrifugal pump and interacts with the stationary part to give a sliding pair. One part of the sliding pair is composed of a composite material, especially carbon fibers or silicon carbide fibers in a matrix of PEEK, carbon or carbon combined with silicon carbide. The other part of the sliding pair has a sliding surface made of a hard metal material and supported by a support material. A bond produced in the molten state is formed between the hard metal material of the sliding surface and the support material which supports the sliding surface of the other part of the slide bearing. The resulting slide bearing can be used in chloride-containing and/or corrosive media and has a sliding surface that is not prone to undercutting corrosion.

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