Pipe jointing system

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

Patent

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Details

F16L 21/00 (2006.01) F16L 21/02 (2006.01)

Patent

CA 2079950

An improved pipe jointing system includes sections of pipe having annular grooves about each of the ends thereof and a coupling having a rigid outer layer and an elastomeric inner layer fixedly secured thereto. The inner layer has a inwardly directed lip and a pair of opposing sets of sawtooth ridges, one set disposed on each side of the lip. A pair of the pipes inserted into opposing ends of one of the couplings in end-to-end relationship compresses the respective lip therebetween forming a fluid-tight seal between the coupling and the pipes. The grooves are adapted to receive respective ones of the sawtooth ridges such that axial movement of the pipes relative to the coupling is resisted. A modified embodiment provides a pipe and coupling system whereby an elastomeric inner layer of the coupling creates sufficient frictional force to resist axially outward movement of the pipes relative to the coupling.

Système amélioré d'assemblage de canalisations, comportant des canalisations dont la surface externe présente à chaque extrémité des rainures annulaires, et des raccords constitués d'un élément externe en matériau rigide et d'un élément interne en matériau élastique fixé à l'élément externe. La surface interne de l'élément interne présente une saillie et deux groupes de crans en dents de scie situés de part et d'autre de cette saillie. Lorsque deux canalisations sont insérées bout à bout dans un raccord, une à chaque extrémité, elles compriment la saillie, ce qui crée un joint étanche entre les canalisations et le raccord. Les crans se logent dans les rainures pratiquées sur la surface externe des canalisations et empêchent le déplacement axial des canalisations hors du raccord. Dans une variante de cette invention, les canalisations sont maintenues dans le raccord par friction entre l'élément élastique interne du raccord et la surface externe des canalisations.

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