发明名称 BOHRWERKZEUG
摘要 A drilling tool which is suitable especially for clearing drill dust from a drillhole in rock-drilling work is provided. For this purpose, the spiral shank has brush elements (6, 17) which are arranged in the groove bottom of a conventional drilling tool or which themselves form spiral feed coils.
申请公布号 DE3919095(A1) 申请公布日期 1990.01.18
申请号 DE19893919095 申请日期 1989.06.10
申请人 HAWERA PROBST GMBH + CO, 7980 RAVENSBURG, DE 发明人 HAUSSMANN, AUGUST, 7981 OBERZELL, DE;PEETZ, WOLFGANG, DIPL.-ING., 7981 FRONREUTE, DE;MOSER, BERNHARD, 7963 ALTSHAUSEN, DE;WESSBECHER, BERND, 7980 RAVENSBURG, DE
分类号 B23Q11/00;B28D1/14;E21B10/44;E21B17/22;E21B37/02 主分类号 B23Q11/00
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