发明名称 |
ROTARY BORING BIT |
摘要 |
<p>A rotary boring bit for boreholes comprises a body provided on its outer periphery with cutting members (6) consisting of a cutting portion (8) and a supporting portion (7), each cutting member being formed as a segment of a sintered body (1) having a core (3) of cutting material encased by a shell (2).</p> |
申请公布号 |
CA1132971(A) |
申请公布日期 |
1982.10.05 |
申请号 |
CA19800347648 |
申请日期 |
1980.03.14 |
申请人 |
CHRISTENSEN, INC. |
发明人 |
PHAAL, CORNELIUS;JURGENS, RAINER |
分类号 |
B23B27/14;B23P15/30;E21B10/46;E21B10/48;E21B10/56;E21B10/567;E21B10/58;E21B10/60;(IPC1-7):21B10/00 |
主分类号 |
B23B27/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|