Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent
1992-06-11
1994-02-22
Britts, Ramon S.
Road structure, process, or apparatus
Pavement
Vault cover-closure
E02D 2914
Patent
active
RE0345504
ABSTRACT:
An improved manhole cover support adjustable in perimeter and adapted to raise the effective grade of an existing manhole cover receiving structure such as a manhole frame is shown. Integral and substantially coextensive with the upper part of its thin-walled lateral cover keeper portion is a reinforcing wale. The cover support can be in the form of a split ring or a plurality of joined segments. Advantageously, it can have bridged joints and a flexible, compressible retention member on at least a portion of its expanding outer wall member.
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Britts Ramon S.
Mulcare Nancy
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