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:
Aug. 02, 2011
Filed:
Sep. 26, 2008
Applicants:
Larry J. Parmeter, Broken Arrow, OK (US);
Scott C. Strattan, Broken Arrow, OK (US);
David W. Chilcoat, Jenks, OK (US);
Inventors:
Larry J. Parmeter, Broken Arrow, OK (US);
Scott C. Strattan, Broken Arrow, OK (US);
David W. Chilcoat, Jenks, OK (US);
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/00 (2006.01); F16C 17/04 (2006.01); F04B 17/00 (2006.01); F04B 35/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rotary pump having thrust bearings includes a system for equalizing the loading on the thrust bearings. The thrust bearings are each supported on pistons that are in fluid communication with a hydraulic circuit. The hydraulic circuit has substantially the same pressure throughout, thereby floating each piston at the same pressure to provide an equal support force to each thrust bearing via each piston.