Title:
ELLIPTICAL UNDERCUT SHOULDER FOR SPECIALTY PIPE CONNECTORS
Document Type and Number:
WIPO Patent Application WO/2014/031608
Kind Code:
A3
Abstract:
A tubular connector connects two tubulars of a string of tubular members. The tubular connector has a pin end tubular member having an axis and a pin end. A pin end flange is positioned on an outer diameter of the pin end and has an undercut adjacent the union of the pin end flange with the pin end. The tubular connector also has a box end tubular member having a box end. A box end shoulder is adjacent the union of the box end with the box end tubular member. The box end shoulder has an undercut thereon. The pin end is secured to the box end so that the pin end tubular member and the box end tubular member are joined, stresses applied to the pin end tubular member and the box end tubular member are distributed through the undercuts.
Inventors:
DO VINH K (US)
PALLINI JR JOSEPH WILLIAM (US)
O'DELL KEVIN EDWARD (US)
PALLINI JR JOSEPH WILLIAM (US)
O'DELL KEVIN EDWARD (US)
Application Number:
PCT/US2013/055745
Publication Date:
August 07, 2014
Filing Date:
August 20, 2013
Export Citation:
Assignee:
VETCO GRAY INC (US)
International Classes:
E21B17/042; E21B17/08; F16L15/00
Domestic Patent References:
| WO1994029565A1 | 1994-12-22 |
Foreign References:
| US1223591A | 1917-04-24 | |||
| US4572549A | 1986-02-25 | |||
| US3345084A | 1967-10-03 | |||
| US4892337A | 1990-01-09 | |||
| US8056940B2 | 2011-11-15 |
Attorney, Agent or Firm:
DOMBROWSKI, Joanna, M. et al. (Global Patent Operation2 Corporate Drive, Suite 64, Shelton CT, US)
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