发明名称 |
Powered joint forming device for concrete or the like |
摘要 |
A powered jointer having a scoring undersurface for forming a stress joint in a wet concrete slab, followed by a reciprocating tamper foot which forms a stress joint while moving rock out of the joint and a smoothing tip following the formation of the stress joint for smoothing out the same, all in a single pass.
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申请公布号 |
US4253816(A) |
申请公布日期 |
1981.03.03 |
申请号 |
US19790065770 |
申请日期 |
1979.08.13 |
申请人 |
TOBIAS, LUTHER;BORIES, DAVID G. |
发明人 |
TOBIAS, LUTHER;BORIES, DAVID G. |
分类号 |
E01C19/40;E01C23/02;(IPC1-7):B28B1/04;B28B1/08;B29C23/00 |
主分类号 |
E01C19/40 |
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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