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:
Dec. 03, 2019
Filed:
Nov. 18, 2016
Grundfos Holding A/s, Bjerringbro, DK;
Erik Bundesen Svarre, Bjerringbro, DK;
John Frigård Nielsen, Fårup, DK;
GRUNDFOS HOLDING A/S, Bjerringbro, DK;
Abstract
A multistage centrifugal pump () has impellers () arranged on a common shaft (), which is rotatably arranged within a pump casing (-). One end of the shaft () is led out of the casing (-) for connection to a drive motor and another shaft end () is rotatably mounted in the pump casing (-). The shaft end () which is mounted within the pump casing (-) is subjected to a counter-force which is produced by way of pressure subjection via a conduit connection to a delivery side of the pump. An axial seal () is provided on the shaft end () arranged within the pump casing (-). The rotating part of the axial seal is led on the shaft end and the non-rotating part is led, axially movably, within the pump casing (-). A sealing arrangement is provided between the pump casing and the axially movably mounted part.