发明名称 Method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material
摘要 A method and device for drilling, particularly percussion drilling or rotary percussion drilling a hole in soil or rock material and fixing an anchoring in the hole. To this end, a drilled hole is made by a drill bit mounted on a drill rod. The drill rod, on the rear side facing away from the drilling surface of the drill bit, is surrounded at a distance from the drill bit by an anchoring element whose outside dimension exceeds, at least in part, the circumference of the drilled hole made by the drill bit.
申请公布号 US7874380(B2) 申请公布日期 2011.01.25
申请号 US20060921762 申请日期 2006.05.30
申请人 “ALWAG” TUNNELAUSBAU GESELLSCHAFT M.B.H. 发明人 MOCIVNIK JOSEF;WAGNER ALFRED;BOHM KARL
分类号 E21B17/10 主分类号 E21B17/10
代理机构 代理人
主权项
地址