发明名称 Directional auger attachment
摘要 The present invention is directed to an auger attachment which is mounted on the stick of a backhoe which provides directional capabilities to the auger. More specifically, the auger attachment includes an outer body, an inner telescoping body and a piston within the inner body which provides all the lift to the auger.
申请公布号 US5592993(A) 申请公布日期 1997.01.14
申请号 US19950431106 申请日期 1995.04.28
申请人 TTI TRENCHLESS TECHNOLOGIES, INC. 发明人 PARISH, II, ROBERT O.;REBER, CLEVE C.
分类号 E21B15/04;E21B19/084;(IPC1-7):E21B3/02;E21B7/02 主分类号 E21B15/04
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