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:
Jan. 13, 2026
Filed:
Feb. 07, 2024
Applicant:
Saudi Arabian Oil Company, Dhahran, SA;
Inventors:
Assignee:
Saudi Arabian Oil Company, Dhahran, SA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 27/04 (2006.01); H01F 27/12 (2006.01); H01F 27/28 (2006.01);
U.S. Cl.
CPC ...
G01N 27/041 (2013.01); H01F 27/12 (2013.01); H01F 27/2823 (2013.01);
Abstract
Systems and methods for detecting damage to a bladder for controlling fluid levels in an oil reservoir of a power transformer include a bladder sleeve. The bladder sleeve includes an inner elastomer layer defining an interior of the bladder sleeve; an outer elastomer layer limiting flow of liquids into the interior of the bladder sleeve; and a middle layer disposed between the inner elastomer layer and the outer elastomer layer, the middle layer including carbon nanotube windings having electrodes attached to opposite ends of the carbon nanotube windings, the carbon nanotube windings having a resistance that changes in response to damage to the bladder.