| 发明名称 |
IMPROVEMENTS IN OR RELATING TO IMPACT COMPACTION OF LAYERS OF SOILS AND GRAVELS |
| 摘要 |
The invention provides an impact roller in which its cross-sectional profile is deformable to permit variation of the lift of the centre of gravity of the roller. Thereby the impact delivered by the roller to underlying soils and gravels may be varied. |
| 申请公布号 |
ZA7000813(B) |
申请公布日期 |
1971.09.29 |
| 申请号 |
ZA19700000813 |
申请日期 |
1970.02.05 |
| 申请人 |
SOUTH AFRICAN INVENTIONS DEV CORP |
发明人 |
BERRANGE A |
| 分类号 |
E02D3/02;E02D3/026 |
主分类号 |
E02D3/02 |
| 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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