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. 28, 2014
Filed:
Dec. 02, 2011
Applicants:
Bernhard Brecht, Neustadt, DE;
Uwe Bruhns, Gruenstadt, DE;
Frank Sehr, Birkenheide, DE;
Inventors:
Assignee:
KSB Aktiengesellschaft, Frankenthal, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 11/00 (2006.01); F01D 25/16 (2006.01); F04D 29/08 (2006.01); F01D 3/00 (2006.01); F01D 3/04 (2006.01); F01D 5/02 (2006.01); F04D 29/041 (2006.01); F04D 27/02 (2006.01); F04D 29/12 (2006.01); F04D 29/58 (2006.01);
U.S. Cl.
CPC ...
F04D 29/126 (2013.01); F04D 29/041 (2013.01); F04D 27/0215 (2013.01); F04D 27/0207 (2013.01); F04D 29/5893 (2013.01); F04D 29/128 (2013.01);
Abstract
A centrifugal pump for delivering hot fluids, having a contacting shaft seal, a seal housing () for the shaft seal (), and a return line () for a partial flow of the delivered fluid, in which no delivered fluid is discharged out of the seal housing (); a separate housing cover () is disposed between the seal housing () and the pump housing (); there is a contact surface which minimizes heat transfer between the seal housing () and the housing cover (); and the return line () is connected to the housing cover () and/or to the pump housing ().