发明名称 SCHWALBENSCHWANZFÖRMIGE GEWINDEROHRKUPPLUNG
摘要 A threaded pipe connection includes a box member and a pin member. The box member has multiple internal, generally dovetail-shaped threads, each with stab flanks, load flanks, roots, and crests. The pin member also has multiple external, generally dovetail-shaped threads, each with stab flanks, load flanks, roots, and crests. The internal threads of the box member each increase in width in one direction, while the external threads of the pin member increase in width in the other direction so that the complementary flanks of the respective threads move into engagement upon make-up of the connection.
申请公布号 DE69933773(D1) 申请公布日期 2006.12.07
申请号 DE1999633773 申请日期 1999.08.03
申请人 HYDRIL CO. 发明人 BEAULIER, F.;MALLIS, L.
分类号 F16L25/00;E21B17/042;F16L15/06 主分类号 F16L25/00
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