发明名称 Rock anchor
摘要 A self-drilling rock anchor includes an anchor tube (2), a drill head (6) provided at the first end (5), an outer thread (8) provided at least in a region of the second, free end (7) of the anchor tube and an adapter (11) releasably connectable with the anchor tube (2) and having an inner thread (17) for engaging the outer thread (8) of the anchor tube (2), a screw stop (14), and a quick-intervention element (15) connectable with a rotatable chuck of a drilling tool the rock anchor is driven-in with.
申请公布号 US2005025578(A1) 申请公布日期 2005.02.03
申请号 US20040902727 申请日期 2004.07.29
申请人 LUDWIG WOLFGANG;LEIBHARD ERICH 发明人 LUDWIG WOLFGANG;LEIBHARD ERICH
分类号 E21B17/042;E21D21/00;(IPC1-7):E21D20/00 主分类号 E21B17/042
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