发明名称 |
DRILLING TOOL |
摘要 |
A drilling tool has a shaft with a drill head at one end and including a receiving region for a cutting plate as well as two guiding regions. The receiving region and the guiding regions project radially outwardly beyond the diamete r (D1) of the shaft. An enveloping circle enclosing the guiding regions, has a diameter corresponding at most to the diameter of an enveloping circle enclosing the radially outer edges of the cutting plate. Excellent guidance of the drilling tool in a borehole is effected by the guiding region which extend partially parallel to the drilling direction.
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申请公布号 |
CA2325061(A1) |
申请公布日期 |
2001.05.11 |
申请号 |
CA20002325061 |
申请日期 |
2000.11.02 |
申请人 |
HILTI AKTIENGESELLSCHAFT |
发明人 |
HAUPTMANN, UDO;SCHAUTT, MARTIN;RICHTER, MARTIN;BAUER, JOSEF |
分类号 |
B23B51/00;B28D1/14;E21B10/44;E21B17/10;(IPC1-7):E21B10/44 |
主分类号 |
B23B51/00 |
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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