US Patent 7484909 Reinforced composite manhole cover assembly

Patent 7484909 was granted and assigned to Gmi Composites Inc. on February, 2009 by the United States Patent and Trademark Office.

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Patent Citations Received

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US Patent 11873613 Lightweight molded cover

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Patent Inventor Names

Aidan R. Brady0

Robert C. Brady0

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Patent abstract

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.

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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=074849090

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