Coupling pipes

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

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F16L 11/02 (2006.01) B29C 33/00 (2006.01) B29C 45/14 (2006.01) B29C 70/76 (2006.01) F16L 21/00 (2006.01) H02G 9/06 (2006.01)

Patent

CA 1101905

ABSTRACT OF THE DISCLOSURE A plastics pipe coupling sleeve has at one end an integral internal rib for engaging an external sealing ring or a pipe, and at the other end an internal resilient sealing ring for engaging a second pipe. The coupling is made by injection moulding the sealing ring then injection moulding the plastics sleeve in contact with the sealing ring. Also disclosed is a technique for moulding a plastics coupling socket directly onto an end of a pipe.

296238

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