发明名称 REPLACEMENT MANHOLE COVER ASSEMBLY
摘要 A replacement manhole cover assembly for an existing manhole having a fixed frame around the periphery of the manhole, the frame having an upper horizontal lip essentially flush with the surrounding pavement and a lower horizontal shelf, wherein the replacement manhole cover assembly includes an annular skirt selectively removable on the lower horizontal shelf of the frame, the skirt having a vertical extension terminating at a lower horizontal shelf for supporting a manhole cover made of composite material.
申请公布号 CA2230740(A1) 申请公布日期 1998.09.05
申请号 CA19982230740 申请日期 1998.03.03
申请人 RAMCO OF INDIANA 发明人 YOUNG, JAMES E.;MEYER, ROY E.
分类号 E02D29/14;(IPC1-7):E02D29/14 主分类号 E02D29/14
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