发明名称 Drilling apparatus and method for introducing a drilling element into the soil
摘要 The invention relates to a drilling apparatus and a method for introducing a drilling element into the soil. The drilling element is rotatably and slidably supported on a mast, with a torque being applied through a rotary drive located on the mast. In order to support the torque an additional turning device is fixed to the mast, which can be engaged with the driven drilling element.
申请公布号 US2005061550(A1) 申请公布日期 2005.03.24
申请号 US20040943934 申请日期 2004.09.20
申请人 HARTHAUSER WERNER 发明人 HARTHAUSER WERNER
分类号 E02D5/36;E02D5/56;E02D7/22;E21B3/02;E21B3/03;(IPC1-7):E21B7/00 主分类号 E02D5/36
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