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. 21, 2018
Filed:
Jun. 02, 2016
Applicant:
Weatherford Technology Holdings, Llc, Houston, TX (US);
Inventors:
Don M. Hannegan, Fort Smith, AR (US);
James W. Chambers, Houston, TX (US);
Melvin T. Jacobs, Fort Smith, AR (US);
Assignee:
Weatherford Technology Holdings, LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/03 (2006.01); E21B 33/06 (2006.01); E21B 33/08 (2006.01); E21B 33/068 (2006.01);
U.S. Cl.
CPC ...
E21B 33/06 (2013.01); E21B 33/068 (2013.01); E21B 33/085 (2013.01);
Abstract
An annular seal having a sealing member and method for use is provided for sealing an item of oilfield equipment. The annular seal has an inner diameter for receiving the item of oilfield equipment and a frame. The seal member is contiguous with the frame. The annular seal is configured for durability, in that it resists wear, inversion, increases lubricity, enables tightness, and/or otherwise generally increases endurance, toughness, and/or permanence.