| 发明名称 |
MEJORAS EN BARRENA GIRATORIA PARA PERFORAR POZOS |
| 摘要 |
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). |
| 申请公布号 |
MX151243(A) |
申请公布日期 |
1984.10.24 |
| 申请号 |
MX19800181581 |
申请日期 |
1980.03.14 |
| 申请人 |
CHRISTENSEN, INC. |
发明人 |
CORNELIUS PHAAL;RAINER JURGENS |
| 分类号 |
B23B27/14;B23P15/30;E21B10/46;E21B10/48;E21B10/56;E21B10/567;E21B10/58;E21B10/60 |
主分类号 |
B23B27/14 |
| 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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