H - Electricity – 01 – R
Patent
H - Electricity
01
R
327/73, 18/74
H01R 43/00 (2006.01) B29C 70/82 (2006.01) B29D 23/00 (2006.01) F16L 47/03 (2006.01)
Patent
CA 2018554
In a method of manufacturing a plastics material sleeve fitted with a heating wire and intended for producing an electric resistance welding connector the sleeve is molded to a cylindrical shape delimited by an outside surface and an inside surface; a helical groove is formed in one of these two surfaces of the sleeve; a wire is placed in the groove; and the plastics material heated by means of the wire is smoothed so as to cover the wire totally and close the groove. The electric resistance welding sleeve obtained in this way is in particular intended to be used either without overmolding it as an ordinary sleeve in particular for welding water pipes or after overmolding it as an electric resistance welding connector in particular for gas pipes.
Boulet D'auria Terlizzi Et Cie
Gdf Suez
Ridout & Maybee Llp
LandOfFree
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