Manhole cover support with topside flange

Details Manhole cover support with topside flange Manhole cover support with topside flange

1989-06-06

1990-11-13

Britts, Ramon S.

Road structure, process, or apparatus

Pavement

Vault cover-closure

52 20, E02D 2914

Patent

active

049697706

ABSTRACT:
A manhole cover support is shown. It is used for raising the effective grade of an existing manhole cover-receiving structure having an upwardly projecting keeper with a rim at its top. The cover support comprises: a peripheral flange that at least substantially completely covers the rim, the thickness of the flange providing the raise in the grade, the flange including a bottom for resting on the rim, a seat for a manhole cover, and a cover keeper that rises from the outer periphery of the seat; and the flange anchored to a fixed part of the existing manhole structure.

REFERENCES:
patent: 3326100 (1967-06-01), White
patent: 3773428 (1973-11-01), Bowman
patent: 3926533 (1975-12-01), Binette
patent: 4029425 (1977-06-01), Pelsue
patent: 4121390 (1978-10-01), Hall et al.
patent: 4188151 (1980-02-01), Hall
patent: 4828274 (1989-05-01), Stannard
One page from Spec. No. 715-13, N.Y. State Dept. of Transportation, Albany, N.Y. entitled "715-13 Prefabricated Adjustment Rings and Frames for Drainage Units and Manholes"--published prior to 1983.

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