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:
Jul. 19, 2022
Filed:
Jul. 24, 2019
Nippon Steel Corporation, Tokyo, JP;
Vallourec Oil and Gas France, Aulnoye-Aymeries, FR;
Yousuke Oku, Tokyo, JP;
Sadao Douchi, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
VALLOUREC OIL AND GAS FRANCE, Aulnoye-Aymeries, FR;
Abstract
A threaded connection for steel pipe that provides both high torque performance and high tension performance is provided. A threaded connectionincludes a tubular pinformed by one tip portion of a steel pipe and a tubular boxadapted to be made up on the pinas the pinis inserted into the box. The pinincludes a male threadprovided on an outer periphery of the pin, the male thread being a wedge thread. The boxincludes a female threadcorresponding to the male threadand provided on the inner periphery of the box, the female thread being a wedge thread. The threaded connectionsatisfies the following expression, (1):3%≤()/≤8%  (1). In expression (1), LP is the pitch between loading flanksof the male thread, and SP is the pitch between stabbing flanksof the male thread