发明名称 Oilwell tubular connection
摘要 A connection (20) for oilwell tubular joints (8 and 9) to effect a fluid tight conduit wherein one of two cooperating stop shoulders (19) of limited dimension is formed with peaks (22) and valleys (24) such that the peaks contact the other stop shoulder (18) upon full make-up of the connection so as to provide channels (24) for the escape of lubricant from between the shoulders and thereby effect a higher overload torque capacity for the connection, without sacrificing other characteristics of the connection.
申请公布号 US4750761(A) 申请公布日期 1988.06.14
申请号 US19870018300 申请日期 1987.02.24
申请人 WATTS, JOHN D. 发明人 WATTS, JOHN D.
分类号 E21B17/042;F16L15/00;F16L15/06;(IPC1-7):F16L55/00 主分类号 E21B17/042
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