| 发明名称 |
ROCK BOLT WITH GROUT FLOW GEOMETRY |
| 摘要 |
A rock bolt having a modified tip geometry for spreading grouting material along the bolt or rupturing a grouting material container, or both, and method of using such a rock bolt for substrate support.
|
| 申请公布号 |
CA2576116(A1) |
申请公布日期 |
2007.07.31 |
| 申请号 |
CA20072576116 |
申请日期 |
2007.01.29 |
| 申请人 |
RAYTHEON UTD INCORPORATED |
发明人 |
GIRALDO, LUIS B.;COTTEN, STEVEN A. |
| 分类号 |
E21D21/00;E21D20/02 |
主分类号 |
E21D21/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
