Manhole cover support with box flanging

Details Manhole cover support with box flanging Manhole cover support with box flanging

1988-06-15

1989-10-10

Massie, IV, Jerome W.

Road structure, process, or apparatus

Pavement

Vault cover-closure

52 20, E02D 2914

Patent

active

048727806

ABSTRACT:
An improved manhole cover support adapted to raise the effective grade of an existing manhole cover receiving structure such as a manhole cover frame is shown. Integral with and substantially coextensive with the top of its thin-walled cover keeper portion is a stiffening wale that defines a cavity. The cavity can be, for example, rectangular or arcuate, and it can contain a cohesive or other filler solid. The cover support need not be adjustable in perimeter, and wale need not be continuous but interrupted adjacent ends can be joined. The cover support can have water seals of compressible polymer that are interposed between its cover seat and the cover that it is to accept, and between its outer perimeter and the upper surface, e.g., paving, into which it is set and/or the shoulder of the existing manhole cover receiving structure where it sits. At least part of the sealing elements can be adherent to the cover support.

REFERENCES:
patent: 1908909 (1933-05-01), Manz
patent: 2109287 (1938-02-01), Elkington
patent: 3773428 (1973-11-01), Bowman
patent: 3891337 (1975-06-01), McCoy
patent: 4440407 (1984-04-01), Gagas

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