F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
285/43
F16L 13/00 (2006.01) F16L 13/10 (2006.01)
Patent
CA 1076623
ABSTRACT The process of the invention can be practiced with coated and uncoated pipe, although the process hag particular utility for coated pipe. The pipe joint made with the process of this invention involves coupling a pin section to a bell section. When formed, the joint has a cylindrical, mechanical inter- ference section that is followed by a substantial, conical, non-interference section whose opposite walls are chemically sealed to each other. The conical section of the pin is first coated with a flexible adhesive. Then by telescoping the pin inside the bell, the flexible adhesive becomes extruded from the cavity between the bell and the pin, to thereby automatically form a ring which completely covers the mouth of the joint. The ring bridges the gap between the coated sections of pipe, there- by providing a continuous coating throughout the connection. Thus, for internally-coated pipe, there is provided a completely-coated run of pipe inclusive of the joint.
287541
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