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. 04, 2025
Filed:
Sep. 16, 2021
Applicant:
National Oilwell Varco, L.p., Houston, TX (US);
Inventors:
Assignee:
National Oilwell Varco, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B 9/00 (2006.01); E21B 43/12 (2006.01); F04D 13/06 (2006.01); F04D 13/10 (2006.01); F04D 25/06 (2006.01); H01B 7/04 (2006.01); H01B 7/08 (2006.01);
U.S. Cl.
CPC ...
H01B 9/006 (2013.01); E21B 43/128 (2013.01); F04D 25/0686 (2013.01); H01B 7/046 (2013.01);
Abstract
Systems and methods for authentication may include balancing an unbalanced power cable using a transformer that has one or more phases by selecting a voltage on a tap handle; disposing a first bushing on one or more phases at a different voltage than the selected voltage; and balancing the unbalanced power cable based on the disposition of the first bushing on the one or more phases at the different voltage.