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:
Nov. 27, 1990
Filed:
Jun. 23, 1989
Applicant:
Inventor:
Klaus Pesch, Leverkusen, DE;
Assignee:
Goetze AG, Burscheid, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
4151743 ; 277 22 ; 277 84 ; 277 88 ; 277 / ;
Abstract
An impeller-and-seal unit for a liquid pump includes a plastic impeller, a metal hub affixed to the impeller and arranged to receive and contact a pump shaft, a slide ring seal assembly including a slide ring and a counterring received in a recess of the impeller and being in sliding contact with the slide ring. The metal hub has a radial extension which projects radially outwardly and which is received in the recess, forming a bottom thereof. The counterring has a radial end face which is in a direct contact with the radial extension.