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公开(公告)号:EP0836919A1
公开(公告)日:1998-04-22
申请号:EP97307206.9
申请日:1997-09-17
发明人: Birk, Rudi , Ferstl, Werner , Huber, Ronald , Lempach, Walter
CPC分类号: B23B51/00 , B23B2251/14 , B23B2251/50 , Y10T408/9097
摘要: A masonry drill bit having an active diameter of D, comprising a shaft and a tip 1 for engaging a workpiece, wherein the tip 1 is formed with a plurality of stepped portions shaped to cut a workpiece as the drill bit rotates. By virtue of the drill bit tip 5 configuration as described and claimed herein, a masonry drill bit 1 having improved performance is provided.
摘要翻译: 一种有效直径为D的砖石钻头,其包括用于接合工件的轴和尖端1,其中尖端1形成有多个台阶部分,该台阶部分被成形为当钻头旋转时切割工件。 借助于此处描述和要求保护的钻头尖端5构造,提供了具有改进性能的mas工钻头1。
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公开(公告)号:EP0836919B1
公开(公告)日:2004-01-02
申请号:EP97307206.9
申请日:1997-09-17
发明人: Birk, Rudi , Ferstl, Werner , Huber, Ronald , Lempach, Walter
CPC分类号: B23B51/00 , B23B2251/14 , B23B2251/50 , Y10T408/9097
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