| 发明名称 |
THE MANUFACTURE OF A DRILL HEAD |
| 摘要 |
A drill head having isostatically bonded therein the shank portions of hard, wear-resistant cutting elements. The drill head can include cutting elements of various shapes and contours. The varied shaped cutting elements result in additional resistance to forces encountered under operational conditions. |
| 申请公布号 |
AU3377478(A) |
申请公布日期 |
1979.09.06 |
| 申请号 |
AU19780033774 |
申请日期 |
1978.03.02 |
| 申请人 |
SKF INDUSTRIAL TRADING & DEVELOPMENT COMPANY B.V. |
发明人 |
HANS BERTIL VAN NEDERVEEN |
| 分类号 |
B23P15/32;B22F7/06;E21B10/52;E21B10/56 |
主分类号 |
B23P15/32 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
