Patent · US Expired

Cutting tool pertaining to a centrifugal pump

US7520454B2 · kind B2 · utility

14Cited by

2References

13Claims

0Family size

Assignee

Wilo AG · DE

Inventors

Manfred Zelder · Bonn, DE
Michael Müller · Hennef (Sieg), DE

Key dates

Filing date	Jan 11, 2005
Grant date	Apr 21, 2009
Priority date	—
Expiry date	Jul 28, 2025

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D7/045
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a cutting tool pertaining to a centrifugal pump for liquids loaded with solids. Said cutting tool comprises a rotating cutting body comprising at least one opening forming a cutting edge and through which the liquid flows, the lateral surface of the cutting body facing the rotationally fixed opposite surface that also comprises at least one opening through which the liquid flows. The lateral surface of the cutting body, facing the opposite surface, is curved in a convex manner, and the opposite surface is curved in a correspondingly concave manner.

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