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. 31, 2000
Filed:
Nov. 03, 1998
Applicant:
Inventor:
Ulf Arbeus, Lidingo, SE;
Assignee:
ITT Manufacturing Enterprises, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D / ; F04D / ;
U.S. Cl.
CPC ...
4151212 ; 4151691 ;
Abstract
A pump of a centrifugal- or a half axial type meant for pumping liquids, mainly sewage water, the pump having a pump housing and a pump impeller. The pump impeller includes a hub provided with one or several vanes, the leading edges of which being strongly swept backwards. Feeding grooves are arranged in the surrounding pump housing in a surface opposed the vanes.