发明名称 STEP-TO-STEP WEDGE THREAD CONNECTIONS AND METHODS OF MAKING UP THE SAME
摘要 Disclosed is a threaded connection including a pin member comprising a first pin step and a second pin step, and pin wedge threads disposed on each of the first and second pin steps and a box member comprising a first box step and a second box step, and box wedge threads disposed on each of the first and second box steps; wherein an axial separation of the first and second pin steps differs from an axial separation of the first and second box steps.
申请公布号 EA024504(B1) 申请公布日期 2016.09.30
申请号 EA20130070046 申请日期 2011.09.21
申请人 HYDRIL COMPANY 发明人 MALLIS DAVID, LLEWELLYN;WARD GARY, W.
分类号 E21B17/02;F16L15/00 主分类号 E21B17/02
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