The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2015
Filed:
Jun. 22, 2010
Mario Haefliger, Sarmenstorf, CH;
Pascal Boesch, Zurich, CH;
Mario Haefliger, Sarmenstorf, CH;
Pascal Boesch, Zurich, CH;
LEVITRONIX GMBH, Zürich, CH;
Abstract
A centrifugal pump is proposed having a pump housing () which has an inlet () and an outlet (), a rotor () having a front side () facing the inlet () and a rear side () remote from the inlet (), and wherein the rotor () has a first pump wheel () having first vanes () for the generation of a main flow from the inlet () to the outlet (), wherein a second pump wheel () having second vanes () and having at least one relief bore () is provided at the rotor () for the generation of a recirculation flow which is directed from the rear side () of the rotor () through the at least one relief bore () and wherein a partition element (), which separates the recirculation flow at least partly from the main flow in the region of the second pump wheel (), is provided between the two pump wheels (). A method for the compensation of the axial thrust in a centrifugal pump is furthermore proposed.