F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
189/24, 18/777
F16L 9/18 (2006.01) B29C 47/06 (2006.01) B29C 47/20 (2006.01) F16L 9/127 (2006.01) F16L 47/00 (2006.01) F16L 59/00 (2006.01) F16L 59/06 (2006.01)
Patent
CA 1068621
Title of the Invention A Joint for Thermoplastic Multi-Walled Pipes and A Process for Producing the Same Abstract of the Disclosure Thermoplastic multi-walled pipes each of which has at least two tubular members different in inside diameter concentrically arranged with a hollow portion therebetween are connected together as if they were single-walled pipes by using a Joint member composed of a tubular part having the same inside diameter 88 the innermost tubular member of the multi-walled pipe and a flange provided at one end of the tubular part concentrically therewith and having the same outside diameter as the multi-walled pipe, and in addition the hollow portion of the thermoplastic multi- walled pipe is kept sealed by the action of the flange. If the innermost tubular member is exposed at the portion where the thermoplastic multi-walled pipe and the joint member is joined, the thermoplastic multi-walled pipes are tightly connected together. The exposure of the innermost tubular member is easily achieved by controlling the bonding strength of the rib to the innermost and outer tubular members of the multi-walled pipe. -1-
279182
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