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:
Oct. 09, 2018
Filed:
Oct. 14, 2015
Applicant:
Grundfos Holding A/s, Bjerringbro, DK;
Inventors:
Steen Mikkelsen, Bjerringbro, DK;
Carl-Christian Danielsen, Ryomgård, DK;
Assignee:
GRUNDFOS HOLDING A/S, Bjerringbro, DK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 17/12 (2006.01); F04D 1/06 (2006.01); F04D 29/42 (2006.01); F04D 29/62 (2006.01); F04D 13/02 (2006.01);
U.S. Cl.
CPC ...
F04D 17/12 (2013.01); F04D 1/063 (2013.01); F04D 13/021 (2013.01); F04D 29/426 (2013.01); F04D 29/628 (2013.01);
Abstract
A multistage centrifugal pump includes a foot part () and a head part (), between which several pump stages are arranged. Each of the pump stages includes an impeller () and a housing () surrounding the impeller (). The housings () are arranged over one another. The housings () together with an outer casing () form an annular channel (). The housings () together with an outer casing () are clamped via clamping bolts () which are fastened on the head part () and the foot part (). The clamping bolts () are arranged within the annular channel ().