发明名称 BORRANORDNING FOER FRAMSTAELLNING AV BORRHAOL MED BAKSKAERNING.
摘要 <p>Drilling device for producing drilled holes with recesses, having a drill bit (2) which has a cross-sectional widened portion and an axial through-bore (16) for drawing off the drillings. The suction cap (3) is held between a flange formed on a drill-bit holder (1) and a flange formed on the shank (13) and consists essentially of a tubular section having a suction nozzle. <IMAGE></p>
申请公布号 FI894582(A) 申请公布日期 1990.04.15
申请号 FI19890004582 申请日期 1989.09.27
申请人 FISCHERWERKE ARTUR FISCHER GMBH & CO.KG 发明人 FISCHER, ARTUR
分类号 B28D1/14;B23B41/06;B23B51/00;B23B51/06;B23Q1/00;B23Q11/00;B28D7/02;(IPC1-7):B28D/ 主分类号 B28D1/14
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