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:
Mar. 07, 2023
Filed:
Feb. 22, 2019
Applicant:
Sandvik Mining and Construction Tools Ab, Sandviken, SE;
Inventor:
Andreas Rindeskar, Hofors, SE;
Assignee:
Sandvik Mining and Construction Tools AB, Sandviken, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/042 (2006.01); F16L 15/06 (2006.01);
U.S. Cl.
CPC ...
E21B 17/0423 (2013.01); E21B 17/0426 (2013.01); F16L 15/06 (2013.01);
Abstract
A coupling for connecting downhole tubulars includes a tubular body, and at least one thread of a male screw thread formed on an outer surface of the body, and a female screw thread formed in an inner surface of the body. The at least one thread has a thread-form including a crest, a root, and a pair of flanks. The crest and the root are each cambered about a respective first and second camber radius. Each camber radius is greater than an outer diameter of the coupling.