F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
285/63
F16L 15/00 (2006.01) F16L 15/06 (2006.01) E21B 17/042 (2006.01)
Patent
CA 1203267
ABSTRACT OF THE DISCLOSURE A screw coupling joint has a sealing portion between an outer circumference formed in convex in an axial direction at an end of a male screw and an inner circumference formed in taper at an inner part of a female screw, and is structured by contacting the end of the male screw to an end of a stopper positioned at an inner part of the female screw, wherein the taper is specified 1 to 3°, and an inner diameter D1 of the female screw and an outer diameter D2 of the male screw have relation of D2 > D1 at a tangent point therebetween, and the end of the male screw and the end of the stopper are formed vertically.
410688
Hori Mitsuaki
Kamimura Haruo
Saigo Takeshi
Takuya Tomohiko
Yasuoka Hidenori
Marcoux & Sher Swabey Mitchell Houle
Nippon Kokan Kabushiki Kaisha
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