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:
Jun. 29, 2021
Filed:
Dec. 02, 2015
Applicant:
National Oilwell Varco Uk Limited, Stonehouse, GB;
Inventor:
Thomas Kilpatrick McLaughlin, Aberdeenshire, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/04 (2006.01); F16L 15/04 (2006.01); E21B 41/02 (2006.01); F16L 58/18 (2006.01); F16L 15/00 (2006.01); E21B 17/042 (2006.01);
U.S. Cl.
CPC ...
E21B 17/042 (2013.01); E21B 41/02 (2013.01); F16L 15/04 (2013.01); F16L 58/182 (2013.01);
Abstract
A connection includes first and second lined tubular members having a coincident bore and a protective ring. The first lined tubular member has a pin end and the second lined tubular member has a box end. Each lined tubular member includes a tubular body, an annular liner, and a mortar filled annulus therebetween. The mortar filled annulus has an annular recess therein at at least one of the pin end and box end for receiving a part of the protective ring. The part received may be a flange on the ring.