发明名称 Apparatus and method for making boreholes in the ground, the cross sections of which boreholes partially intersect
摘要 An apparatus for making a second borehole in the ground, a cross section of which second borehole partially intersects a cross section of an existing first borehole, includes a boring device and a guide device operatively connected to the boring device. The guide device includes at least a first guide element configured to interact with a wall of the existing first borehole and a direction-influencing device configured to influence a direction of the second borehole while the second borehole is being made. The guide device is configured to guide the boring device relative to the existing first borehole.
申请公布号 US8662206(B2) 申请公布日期 2014.03.04
申请号 US20090919014 申请日期 2009.02.16
申请人 VON WIRTH HERMANN JOSEF;HEINRICHS PETER;AKER WIRTH GMBH 发明人 VON WIRTH HERMANN JOSEF;HEINRICHS PETER
分类号 E21B7/00 主分类号 E21B7/00
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