发明名称 REINFORCED COMPOSITE MANHOLE COVER ASSEMBLY AND COMPONENTS THEREOF
摘要 <p>A lightweight manhole cover assembly includes a cover and a base, with the cover including an inner surface having a plurality of ribs extending therefrom. The base includes an inner surface having a plurality of receptacles extending therefrom. The receptacles of the base have a layout that corresponds to the ribs of the cover, such that the ribs are adapted to be inserted into the receptacles. Latching and clamping or sealing assemblies are adapted to retain a lightweight manhole cover assembly in a desired position over an opening.</p>
申请公布号 WO2008025029(A2) 申请公布日期 2008.02.28
申请号 WO2007US76888 申请日期 2007.08.27
申请人 GMI COMPOSITES INC.;BRADY, ROBERT, C.;BRADY, AIDAN R. 发明人 BRADY, ROBERT, C.;BRADY, AIDAN R.
分类号 B65D45/24;E05D11/10 主分类号 B65D45/24
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