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:
Jul. 31, 2018
Filed:
Dec. 11, 2014
Baker Hughes Incorporated, Houston, TX (US);
Yong Li, Owasso, OK (US);
Scott C. Strattan, Broken Arrow, OK (US);
Baker Hughes, a GE Company, LLC, Houston, TX (US);
Abstract
An electrical submersible well pump assembly includes a rotary pump and a motor. An inner rotor is coupled to the motor shaft. The inner rotor has steel discs stacked together with end caps at each end. The discs have apertures that align to define axially extending slots. Each of the slots has a closed outer wall spaced radially inward from an outer diameter surface of the inner rotor. Inner rotor magnets are located within the slots. Continuous open and thin gaps between rotating components act as hydrodynamic bearings. Damper bars extend axially at points between the outer walls of the slots and the outer diameter surface of the inner rotor. An outer rotor has a bore that receives the inner rotor, the outer rotor being operatively coupled to the pump shaft for rotation therewith. Outer rotor magnets are mounted to the bore of outer rotor.