发明名称 |
Three ply bolted temporary road mats and apparatus for manufacturing same |
摘要 |
An apparatus for making temporary road mats characterized by multiple layers of mutually perpendicular elongated timbers having an array of vertical intersections aligned in lateral rows. The apparatus includes a gang drill that moves relative to a roughly assembled mat for sequentially drilling the lateral rows of intersections.
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申请公布号 |
US2005022363(A1) |
申请公布日期 |
2005.02.03 |
申请号 |
US20040750272 |
申请日期 |
2004.01.02 |
申请人 |
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发明人 |
HARRISON RONALD |
分类号 |
B27B5/04;B27M3/00;B32B21/13;E01C9/08;E01D15/12;E01D21/00;(IPC1-7):B23P11/00;B23B39/16 |
主分类号 |
B27B5/04 |
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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