Super high torque dope-free threaded joint

Details Super high torque dope-free threaded joint Super high torque dope-free threaded joint

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 15/06 (2006.01) E21B 17/08 (2006.01)

Patent

CA 2681040

A high torque threaded joint comprising a box member having threads and a pin member having threads (10) configured and positioned to mate with the threads of the box member. There- is a flank- to-flank contact thread profile using trapezoidal threads with both a positive and very low load flank angle, (.beta.1 or a); and a positive and very low stabbin flank (14) angle, (.beta.2, or b), wherein the threads are coated with a solid, dopefree surface treatment.

La présente invention concerne un joint fileté à couple élevé comprenant un élément de boîtier ayant des filets et un élément de broche ayant des filets (10) configurés et positionnés pour s'accoupler avec les filets de l'élément de boîtier. Il existe un profil fileté de contact flanc à flanc utilisant des filets trapézoïdaux dotés à la fois d'un angle positif de flanc de charge très bas (.beta.1 or a) et d'un angle positif de flanc (14) de piquage très bas (.beta.2 or b), les filets étant revêtus d'un traitement de surface solide dépourvu d'additif.

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