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:
May. 29, 2018
Filed:
Jul. 29, 2014
Jfe Steel Corporation, Tokyo, JP;
Takamasa Kawai, Handa, JP;
Kazunari Takahashi, Handa, JP;
Hiroshi Chikatsune, Handa, JP;
Masaki Yoshikawa, Handa, JP;
Jun Takano, Handa, JP;
Takuya Nagahama, Handa, JP;
Masateru Ueta, Handa, JP;
Hideo Sato, Handa, JP;
Haruhiko Seki, Handa, JP;
Tsuyoshi Yoneyama, Handa, JP;
JFE Steel Corporation, , JP;
Abstract
A premium threaded joint has a pin-side shoulder angle θ1, a box-side shoulder angle θ2, a seal interference quantity δ and a seal point distance xp satisfying θ2−θ1=α×δ/xp, α=7 to 14, and a pin distal end thickness tp1 defined by a difference Re−Ri between a radius Re of a pin most distal end portion and an inner radius Ri of a pin distal end portion is 0.25 times or more as large as a pin raw pipe thickness tp0.