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:
Jan. 02, 2001
Filed:
Feb. 04, 1999
Applicant:
Inventor:
Peter Wagner, Werdohl, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 1/718 ;
U.S. Cl.
CPC ...
F04D 1/718 ;
Abstract
Centrifugal pump with a pump chamber (,) housing a radial impeller (,) and aspiration port arranged coaxially with the radial impeller, and at least one ventilating conduit (,) that leads from the inner radial area of the pump chamber to the outside, wherein the outer circumferential edge of the pump chamber (,) is fitted with interference contours (,) that are essentially directed tangentially to swirl the liquid flow.