发明名称 Apparatus and a method for facilitating the connection of pipes
摘要 An apparatus for facilitating the connection of pipes which apparatus comprises a rotary (1) and jaws (20, 21, 22), characterised in that all of said jaws (20, 21, 22) are active and are actuable by pressurised fluid.
申请公布号 US6598501(B1) 申请公布日期 2003.07.29
申请号 US20010890194 申请日期 2001.07.26
申请人 WEATHERFORD/LAMB, INC. 发明人 SCHULZE-BECKINGHAUSEN JOERG ERIC;PIETRAS BERND-GEORG
分类号 E21B19/16;(IPC1-7):B25B17/00 主分类号 E21B19/16
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