Tool joint

Details Tool joint Tool joint

F - Mech Eng,Light,Heat,Weapons

16

L

10/25

F16L 25/00 (2006.01)

Patent

CA 1234255

Abstract of the Disclosure A tool joint in which different tapers on the threads result in an artificial change in pitch and a radial interfer- ence and an asymmetric root cut on a larger radius than conventional API threads together with the effect of the tapered thread engagement reduces maximum stress in the thread roots and prevents over-torquing.

458848

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