Pipe coupling having wedge shaped keys

Details Pipe coupling having wedge shaped keys Pipe coupling having wedge shaped keys

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 19/025 (2006.01) F16L 19/065 (2006.01) F16L 23/032 (2006.01) F16L 23/036 (2006.01)

Patent

CA 2560856

A coupling and pipes joined by the coupling are disclosed. The pipes have circumferential grooves adjacent their ends which are engaged by keys that project inwardly from the couplings. The keys are wedge shaped and substantially fill the grooves to provide a rigid joint. The grooves may have a shape that is complementary to the grooves. The keys may have convex or concave cross sectional shapes. The couplings have segments attached by fasters engaging lugs at either end of the coupling. The lugs are attached pad to pad or in spaced relationship. Gaps may be maintained between various surfaces on the keys and on the grooves through tolerances on the couplings.

L'invention concerne un raccord et des conduits assemblés au moyen de ce raccord. Les conduits présentent des rainures périphériques adjacentes à leurs extrémités, dans lesquelles viennent s'insérer des cales qui s'avancent vers l'intérieur à partir des raccords. Ces cales sont cunéiformes et remplissent sensiblement les rainures de manière à former un joint rigide. Les rainures peuvent présenter une forme complémentaire aux cales, et ces dernières peuvent présenter une section de forme convexe ou concave. Les raccords comprennent des segments fixés au moyen d'éléments d'attache insérés dans des oreilles formées à chaque extrémité du raccord. Les oreilles sont fixées surface contre surface, ou espacées mutuellement. Des espaces peuvent être conservés entre les différentes surfaces des cales et des rainures, du fait de tolérances appliquées aux raccords.

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