发明名称 |
Stiffening flanges for deformation resistance of manhole cover support |
摘要 |
An improvement for increasing the resistance of manhole cover supports to deformation is provided which comprises equipping the upper edge or flange thereof with a succession of pressed-in gussets, the troughs of which slope with respect to the keeper of said cover support or equipping a keeper wall thereof with a succession of pressed-out gussets.
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申请公布号 |
US5150984(A) |
申请公布日期 |
1992.09.29 |
申请号 |
US19920846518 |
申请日期 |
1992.03.04 |
申请人 |
BOWMAN, HAROLD M. |
发明人 |
BOWMAN, HAROLD M.;FULLER, GEORGE T. |
分类号 |
E02D29/12;E02D29/14 |
主分类号 |
E02D29/12 |
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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