Title:
特に半径方向に塑性的に拡張可能な導管のためのねじ結合構造
Document Type and Number:
Japanese Patent JP4087798
Kind Code:
B2
Abstract:
A threaded connection includes a male member having threads thereon defining a load flank lead and a stab flank lead. The threaded connection also includes a female member having threads thereon adapted to mate with threads on the male member, wherein the threads on the female end define a load flank lead and a stab flank lead, wherein at least one of the load flank lead and the stab flank lead on at least one of the female member and the male member change at a predetermined rate beginning at a selected distance from either one or both ends of the threads, wherein the stab flank lead and the load flank lead are different from each other over at least part of the thread length.
Inventors:
Sibley Robert Es The Force
Application Number:
JP2003585903A
Publication Date:
May 21, 2008
Filing Date:
April 16, 2003
Export Citation:
Assignee:
Hydril Company
International Classes:
F16L15/04; F16L13/14; F16L13/16; F16L15/06; F16L25/00
Domestic Patent References:
| JP60069385A | ||||
| JP60501224A |
Foreign References:
| WO2002001102A1 | ||||
| US6254146 | ||||
| WO2001029475A1 | ||||
| US4600224 | ||||
| US4629222 |
Attorney, Agent or Firm:
Kenji Yoshida
Jun Ishida
Jun Ishida