发明名称 |
TREPANNING TOOL FOR DRILLING MACHINES |
摘要 |
According to the invention, at least two cutting blades (3a, 3b) are attached to a body (4) on the opposite sides of a centre bit (2) at substantially an equal distance from the centre bit (2). The cutting point (6a) of the first blade (3a) is on the outer edge of the blade (3a), and the cutting point (6b) of the second cutting blade (3b) is on the inner edge of the cutting blade (3b) whereby, when a hole is drilled, a wide cut is formed in the object drilled by the action of the cutting blades (3a, 3b).
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申请公布号 |
WO9427773(A1) |
申请公布日期 |
1994.12.08 |
申请号 |
WO1994FI00197 |
申请日期 |
1994.05.17 |
申请人 |
JOONA, ANNA-LIISA;JOONA, ERKKI;JOONA, AARO;JOONA, EERO |
发明人 |
JOONA, EERO |
分类号 |
B05B15/12;B23B51/05;(IPC1-7):B23B51/04 |
主分类号 |
B05B15/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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