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:
Jun. 23, 2009
Filed:
Dec. 13, 2006
Matthew Hackworth, Manvel, TX (US);
David Eslinger, Collinsville, TX (US);
Norwood R. Harrell, Dewey, TX (US);
Matthew Hackworth, Manvel, TX (US);
David Eslinger, Collinsville, TX (US);
Norwood R. Harrell, Dewey, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A centrifugal pump includes a rotatable shaft; and at lest one impeller attached to the rotatable shaft, wherein the at least one impeller includes a top plate, and a bottom plate, and a plurality of vanes enclosed between the top plate and the bottom plate, wherein at least one of the plurality of vanes has a trailing end that comprises a first surface that adjoins the top plate substantially at an outer edge of the top plate and a second surface that is substantially flush with an axially outward surface of the bottom plate.