Fitting for plain end pipes

Details Fitting for plain end pipes Fitting for plain end pipes

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 19/08 (2006.01)

Patent

CA 2224134

A pipe fitting includes a fixture member having a hollow interior, an outer surface and a pipe opening through the outer surface of the fixture member shaped to encircle a plain end of a pipe. The pipe fitting also includes an engagement member having a cutting surface exposed outside of the fixture member and a threaded attachment member extending outwardly from the outer surface of the fixture member and connecting the engagement member with the fixture member. The threaded attachment member has a central axis extending away from the engagement member, through the outer surface, into the fixture member and generally toward a central axis of the pipe opening. A plain end of a pipe is inserted into the pipe opening of the fixture member and the cutting surface of the engagement member is positioned facing an outer surface of the pipe. The engagement member is moved toward the fixture member along a central axis of the attachment member using the attachment member so that the cutting surface of the engagement member progressively contacts and then cuttingly engages the outer surface of the pipe. Material removed from the outer surface of the pipe is accumulated on the outer surface between the engagement member and the fixture member to thereby form at least part of an interference fit between the pipe and the engagement member.

Raccord de tuyau comprenant un élément de raccord comportant un intérieur creux, une surface extérieure et une ouverture pour tuyau dans la surface extérieure de l'élément de raccord formé pour entourer l'extrémité lisse d'un tuyau. Le raccord de tuyau comprend aussi un élément d'engagement possédant une surface coupante exposée à l'extérieur de l'élément de raccord et un élément de fixation fileté qui s'étend vers l'extérieur à partir de la surface de l'élément de raccord et qui relie l'élément d'engagement à l'élément de raccord. L'élément de fixation fileté a un axe central qui s'éloigne de l'élément d'engagement, à travers la surface extérieure, dans l'élément de raccord et en général vers l'axe central de l'ouverture pour le tuyau. Un bout uni du tuyau est introduit dans l'ouverture pour le tuyau de l'élément de raccord et la surface coupante de l'élément d'engagement est placée face à une surface extérieure du tuyau. L'élément d'engagement est déplacé vers l'élément de raccord sur l'axe central de l'élément de fixation en utilisant ce dernier de manière que la surface coupante de l'élément d'engagement touche graduellement la surface extérieure du tuyau et l'engage ensuite de façon à la couper. La matière enlevée de la surface extérieure du tuyau est accumulée sur la surface extérieure entre l'élément d'engagement et celui de raccord pour constituer ainsi au moins une partie d'un ajustement avec serrage entre le tuyau et l'élément d'engagement.

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