Crimp-type coupling, crimping tool, and method of crimping

Details Crimp-type coupling, crimping tool, and method of crimping Crimp-type coupling, crimping tool, and method of crimping

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 13/14 (2006.01) B25B 7/04 (2006.01) B25B 27/00 (2006.01) F16L 21/03 (2006.01)

Patent

CA 2749937

A coupling installed by crimping has an angularly oriented conical surface at an open end surrounded by a ring which receives a pipe element. Dies move radially toward the coupling on jaws of a crimping tool and engage the conical surface along a single line of contact to effect a crimp which secures the coupling to the pipe. The radially applied force has radial and ax-ial components. The radial component effects the crimp, the axial component deforms a channel in the coupling in which a seal is located. The seal is deformed between the coupling and the pipe to effect a fluid tight joint. The coupling may have a circumferen-tial rib which projects radially outwardly. Registration dogs engage the coupling and provide a reaction surface against the axial force component.

Un raccord installé par sertissage est pourvu d'une surface conique orientée de façon angulaire à une extrémité ouverte entourée par un anneau qui reçoit un élément de tuyau. Des dés se déplacent de façon radiale vers le raccord sur les mâchoires d'un outil de sertissage et mettent en prise la surface conique le long d'une ligne de contact unique afin d'effectuer un sertissage qui fixe le raccord au tuyau. La force appliquée radialement est dotée de composantes radiale et axiale. La composante radiale effectue le sertissage, la composante axiale déforme un canal dans le raccord dans lequel un joint est placé. Le joint est déformé entre le raccord et le tuyau afin d'obtenir un joint étanche aux fluides. Le raccord peut être doté d'une nervure circonférentielle qui fait saillie vers l'extérieur de façon radiale. Des agrafes d'alignement mettent en prise le raccord et fournissent une surface de réaction contre la composante de force axiale.

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