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. 01, 1988
Filed:
Oct. 13, 1987
Applicant:
Inventor:
Mark C James, Claremore, OK (US);
Assignee:
Hughes Tool Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
4152 / ; 415196 ; 4151991 ;
Abstract
A centrifugal submersible pump has wear resistant features to resist erosion due to sand laden fluid from a well. The pump has a plurality of stages, each having a diffuser and an impeller located within a housing. The diffuser has a sleeve in its inner portion that has a flange on its upper end. The sleeve is a separate component from the remaining portions of the diffuser and harder. The impeller has a vane section and a hub. The hub is carried inside the sleeve. The hub has a flange that bears against the flange of the diffuser sleeve. The impeller hub is a separate component from the vane section of the impeller and is of a harder material.