Manhole cover support with flange borne on its own base

Details Manhole cover support with flange borne on its own base Manhole cover support with flange borne on its own base

1991-08-14

1992-11-24

Britts, Ramon S.

Road structure, process, or apparatus

Pavement

Vault cover-closure

E02D 2914

Patent

active

051658194

ABSTRACT:
A manhole cover support with a fixed-sized top flange is shown. The cover support is adaptable to standardizing on the manhole cover size and inventory of covers for group of manhole installations having geometrically similar but somewhat varying sizes, this as well as being useful for holding the cover level or inclined, at a new, higher grades while also permitting the efficient establishment of the new cover height elevation and adjustment of the same. The cover support comprises a top peripheral flange having a seat for a manhole cover and a cover keeper that rises from the outer periphery of the seat, and a base fitting into the confines of the cover keeper of an existing manhole cover-receiving structure such as a manhole frame, the base supporting the flange, and being in a slidable engagement therewith.

REFERENCES:
patent: 3218943 (1965-11-01), Bowman
patent: 3218944 (1965-11-01), Bowman
patent: 3930739 (1976-01-01), Larsson
patent: 4969770 (1990-11-01), Bowman
patent: 4969771 (1990-11-01), Bowman
patent: 5021261 (1991-06-01), Bowman

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