Invention Grant
- Patent Title: Wedge thread with torque shoulder
- Patent Title (中): 楔形螺纹带扭矩肩
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Application No.: US09977746Application Date: 2001-10-15
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Publication No.: US07690696B2Publication Date: 2010-04-06
- Inventor: David Llewellyn Mallis , Harris Allen Reynolds
- Applicant: David Llewellyn Mallis , Harris Allen Reynolds
- Applicant Address: US TX Houston
- Assignee: Hydril Company
- Current Assignee: Hydril Company
- Current Assignee Address: US TX Houston
- Agency: Osha • Liang LLP
- Main IPC: F16L25/00
- IPC: F16L25/00

Abstract:
A threaded pipe connection including a pin member having an external thread increasing in width in one direction, the external thread including load and stab flanks, a box member having an internal thread increasing in width in the other direction so that complementary internal and external threads move into engagement upon make-up of the connection, the internal thread comprising load and stab flanks, a positive stop torque shoulder, and wherein the width of the internal thread and external thread are selected to provide a selected clearance at least between the internal load and stab flanks and the external load and stab flanks upon initial engagement of the positive stop torque shoulder is disclosed.
Public/Granted literature
- US20020027363A1 Wedge thread with torque shoulder Public/Granted day:2002-03-07
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