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:
Sep. 11, 2012
Filed:
Aug. 03, 2006
Applicants:
Kjeld Appel, Silkeborg, DK;
Eigil D. Andersen, Bjerringbro, DK;
Jan Harding Gliemann, Bjerringbro, DK;
Christian Rasmussen, Tjele, DK;
Inventors:
Kjeld Appel, Silkeborg, DK;
Eigil D. Andersen, Bjerringbro, DK;
Jan Harding Gliemann, Bjerringbro, DK;
Christian Rasmussen, Tjele, DK;
Assignee:
Grundfos Management a/s, Bjerringbre, DK;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 35/04 (2006.01); F01D 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A submersible pump unit having a wet-running electric motor and only a single impeller can be driven by the electric motor with a rotation speed greater than 20,000 rpm. The rotor of the electric motor has a diameter of less than 25 mm.