发明名称 UNDERGROUND DRILLING APPARATUS
摘要 A drilling apparatus is adapted for connection to a drill string such that the drill string rotates the drilling apparatus in a rotational cutting motion. The drilling apparatus includes a sonde housing having a distal end and a proximal end. The sonde housing includes a top platform positioned adjacent the distal end of the sonde housing and further includes a tongue positioned on the top platform. The drilling apparatus further includes a rotary cutting tool mounted to the distal end of the sonde housing.
申请公布号 US2012118640(A1) 申请公布日期 2012.05.17
申请号 US201113247327 申请日期 2011.09.28
申请人 RUNQUIST RANDY R.;HOELTING KEITH A. 发明人 RUNQUIST RANDY R.;HOELTING KEITH A.
分类号 E21B7/00;E21B10/00 主分类号 E21B7/00
代理机构 代理人
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