Title:
【発明の名称】多面型フランクを有するねじ形状
Document Type and Number:
Japanese Patent JP2002543345
Kind Code:
A
Abstract:
A thread form for a tubular connection of the type having a pin member adapted to be made-up with a box member to form a pipe joint as shown. The pin member has pin threads with thread crests and thread roots which are adapted to be made-up with a mating box member having a complimentary thread structure. The pin thread crests are formed between a stab flank and a load flank of the pin thread. The pin thread has a multi-facited complex profile stab flank for engaging a mating stab flank on the complimentary box member to provide a wedging interfit between the surfaces of the pin and box threads. The pin and box threads are also helically structured as a wedge.
Inventors:
Church, Chris Elle
Application Number:
JP2000613972A
Publication Date:
December 17, 2002
Filing Date:
April 12, 2000
Export Citation:
Assignee:
JOHN GANDY CORPORATION
International Classes:
F16L15/04; F16L15/00; F16L15/06; E21B17/042; (IPC1-7): F16L15/04
Attorney, Agent or Firm:
Youichi Oshima