Patent ID: 6530607
Filing Date: 2003-03-11
Classification: E21B,F16L

Abstract:
A threaded connector, comprising:a pin member having a large thread step and a small thread step thereon, the pin member having a first sealing surface between the steps, threads on the large and small thread steps each having load flanks and stab flanks thereon; and a box member having a large thread step and a small thread step thereon corresponding to the thread steps on the pin member, the box member having a second sealing surface corresponding to the first sealing surface, threads on the steps of the box member having load flanks and stab flanks corresponding to the threads on the steps of the pin member, and wherein the threads on the large step have a first clearance between corresponding stab flanks on the pin and box members when the pin and box members are assembled and corresponding load flanks are engaged, and the threads on the small step have a second clearance between corresponding stab flanks when the pin and box members are assembled and corresponding load flanks are engaged, the first clearance smaller than the second clearance.