发明名称 Device for installing pipe in ground comprises reamer driven by pulling rods with pulling head fixed to pipe and uncoupling means between reamer and pulling head
摘要 The device comprises a reamer (10) driven by a set of pulling rods (3) in translation in a given direction and rotating around this direction. A pulling head (20) is able to be fixed to the pipe (2) to be installed and an uncoupling means (51) is mounted between the reamer and the pulling head.
申请公布号 FR2809449(A1) 申请公布日期 2001.11.30
申请号 FR20000006713 申请日期 2000.05.25
申请人 BUTTERWORTH JACK 发明人 BUTTERWORTH JACK
分类号 E21B7/20;E21B7/28;(IPC1-7):E21B7/28;F16L1/028 主分类号 E21B7/20
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