F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
285/63
F16L 15/00 (2006.01) E21B 17/042 (2006.01)
Patent
CA 1264784
ABSTRACT A tubular connector for adjoining two adjacent joints comprising a first pin end on a first joint, a second pin end on a second joint and a tubular coupling member with suitable threads for mating with both pin ends. Each pin end is tapered and includes wedge threads. The wedge threads achieve a metal-to-metal seal upon makeup by providing a root-and-crest bearing surface prior to makeup. As an addition, a metal-to-metal conical seal can be provided in front of the most forward thread revolution on the pin ends. Further as an addi- tion, an elastomeric seal can be provided in a circum- ferential groove just forward of the conical seal for making a compound seal therewith. A corrosion barrier ring can be included in the coupling member for filling the gap between the tip ends of the two pin ends being joined.
489695
Hydril Company
Smart & Biggar
LandOfFree
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