发明名称 |
Shielded tamper and method of use for making aggregate columns |
摘要 |
A tamper device includes a shaft for driving a tamper head. A tamper head is attached to the end of the shaft for tamping a lift of aggregate in a cavity formed in a ground surface. A shield extends upwardly a predetermined height from the tamper head an amount sufficient to prevent sidewalls of the cavity from failing and collapsing. Methods of constructing aggregate columns with thicker lifts are also disclosed. |
申请公布号 |
US8128319(B2) |
申请公布日期 |
2012.03.06 |
申请号 |
US20090511310 |
申请日期 |
2009.07.29 |
申请人 |
WISSMANN KORD J.;GEOPIER FOUNDATION COMPANY, INC. |
发明人 |
WISSMANN KORD J. |
分类号 |
E02D3/02 |
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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