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. 18, 2014
Filed:
Sep. 08, 2011
Applicants:
Carsten Hohl, Hannover, DE;
Harald Grimmer, Niedersachsen, DE;
Inventors:
Carsten Hohl, Hannover, DE;
Harald Grimmer, Niedersachsen, DE;
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01C 1/10 (2006.01); F03C 2/00 (2006.01); F03C 4/00 (2006.01); F04C 2/00 (2006.01); F03C 2/08 (2006.01); F04C 2/107 (2006.01); F04C 2/08 (2006.01); F04C 13/00 (2006.01); E21B 4/02 (2006.01);
U.S. Cl.
CPC ...
E21B 4/02 (2013.01); F03C 2/08 (2013.01); F04C 2/1071 (2013.01); F04C 2/084 (2013.01); F04C 13/008 (2013.01); F04C 2/086 (2013.01);
Abstract
In an aspect, the disclosure provides an apparatus for use downhole. In one aspect the apparatus includes a rotor with lobes disposed in stator with lobes, wherein at least one of the contours of the rotor lobe and the contour of the stator lobe is asymmetric.