Invention Grant
- Patent Title: 4-round thread form
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Application No.: US14448306Application Date: 2014-07-31
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Publication No.: US09695648B2Publication Date: 2017-07-04
- Inventor: Lawrence Moore
- Applicant: FUTURE PIPE INDUSTRIES GROUP LIMITED
- Applicant Address: AE Dubai
- Assignee: FUTURE PIPE INDUSTRIES GROUP LIMITED
- Current Assignee: FUTURE PIPE INDUSTRIES GROUP LIMITED
- Current Assignee Address: AE Dubai
- Agency: Nath, Goldberg & Meyer
- Agent Jerald L. Meyer; Christopher Thomas
- Main IPC: F16L15/00
- IPC: F16L15/00 ; E21B17/042 ; F16B33/02

Abstract:
An apparatus is disclosed that forms a piping thread form of four threads per inch pipe (TPI). The thread form is configured to have a load flank, a load flank angle, a stab flank, a stab flank angle, a crest, and a root. Hydrostatic pressure tests using the 4-round thread form at pressures of 4,500 psi and greater resulted in failures due to thread leaks. Tensile tests using the 4-round thread form at loads of 187,400 lbs. and greater resulted in shearing at forces of 3,535 psi and greater.
Public/Granted literature
- US20150035273A1 4-ROUND THREAD FORM Public/Granted day:2015-02-05
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