| 发明名称 |
DRILL BIT |
| 摘要 |
A drill bit (10) has a cutting face (12) for engaging a workpiece. The cutting face (12) forms an annular cut. A mouth (14) is bounded by the cutting face (12) and receives material of the workpiece from within the annular cut, as cutting progresses. An internal passage has a mouth (32) through which this material can leave the bit. |
| 申请公布号 |
WO2007049020(A2) |
申请公布日期 |
2007.05.03 |
| 申请号 |
WO2006GB03939 |
申请日期 |
2006.10.23 |
| 申请人 |
C4 CARBIDES LIMITED;DUGGAN, PAUL, EDWARD |
发明人 |
DUGGAN, PAUL, EDWARD |
| 分类号 |
B28D1/04;B23B45/00;B23B49/02;B23B51/04;B23Q11/00;B23Q11/10 |
主分类号 |
B28D1/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
