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 15/04 (2006.01) F16L 15/06 (2006.01) E21B 17/042 (2006.01)
Patent
CA 1191172
ABSTRACT OF THE DISCLOSURE A screw coupling joint makes a direct end-to-end connection between mutual pipes, or via a sleeve, by providing a step portion on an inner surface about an interior of a female screw portion of the coupling joint, so that the step portion and an end portion of a male screw portion are contacted via packing material.
403231
Asakawa Hiroo
Hori Mitsuaki
Horii Hidenori
Kamimura Haruo
Yasuoka Hidenori
Marcoux & Sher Swabey Mitchell Houle
Nippon Kokan Kabushiki Kaisha
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