Two-step threaded connector having differential thread width
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United States of America Patent
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Mar 11, 2003
Grant Date -
N/A
app pub date -
Nov 6, 2000
filing date -
Nov 6, 2000
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A threaded connector includes a pin member having a large thread step and a small thread step. The pin member has a first sealing surface between the steps. Threads on the steps of the pin member each have load flanks and stab flanks. The connector includes a box member having a large thread step and a small thread step corresponding to the thread steps on the pin member. The box member has a second sealing surface corresponding to the first sealing surface. Threads on the steps of the box member have load flanks and stab flanks corresponding to the threads on the pin member. The threads on the large thread step have a first clearance between corresponding stab flanks on the pin and box members when the pin and box members are assembled and the corresponding load flanks are engaged. The threads on the small step have a second clearance between corresponding stab flanks when the pin and box members are assembled. The first clearance in one embodiment is smaller than the second clearance.
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