发明授权
US07080697B2 Method and device for drilling a hole and for securing an anchorage in a bore hole 失效
用于钻孔并用于固定钻孔中的锚固件的方法和装置

Method and device for drilling a hole and for securing an anchorage in a bore hole
摘要:
A method and a device for the drilling, in particular the percussive or percussive rotary drilling of a hole in earth or rock and for securing an anchorage in the hole. A bore hole is created by a drill bit mounted on a drill pipe and a sliding sleeve that surrounds the drill pipe at a distance is simultaneously introduced. A sliding sleeve configured with a longitudinal slit is introduced at least partially and rests substantially against the bore hole during the drilling, whereby a reliable anchorage can be achieved with a simple construction by the sliding sleeve with a longitudinal slit.
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