| 发明名称 |
ENGAGEMENT HEAD FOR TENSIONING ASSEMBLY |
| 摘要 |
An engagement head for a rock bolt tensioning assembly is disclosed that is profiled to include at least one key surface to inhibit rotation of the engagement head relative to a rock surface, either by direct engagement with the rock surface or through abutment with a plate-like member that is engageable with the rock surface.
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| 申请公布号 |
US2010266345(A1) |
申请公布日期 |
2010.10.21 |
| 申请号 |
US20100731531 |
申请日期 |
2010.03.25 |
| 申请人 |
FCI HOLDINGS DELAWARE, INC. |
发明人 |
HINTON HAROLD GREGORY;ARNOT JEREMY ROSS;CRAIG PETER HAROLD;GAUDRY TIMOTHY JOSEPH;FARRINGTON BERNARD;QUIRK KEVIN |
| 分类号 |
E21D21/00;E21D20/00 |
主分类号 |
E21D21/00 |
| 代理机构 |
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