Manhole cover support with topside flange and inclined seat

Details Manhole cover support with topside flange and inclined seat Manhole cover support with topside flange and inclined seat

1990-09-10

1991-09-24

Britts, Ramon S.

Road structure, process, or apparatus

Pavement

Vault cover-closure

E02D 2914

Patent

active

050510223

ABSTRACT:
A manhole cover support is shown. It is used for raising the 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 said rim, the flange including a bottom, an inclined seat for a manhole cover, and a cover keeper that rises from the outer periphery of the seat and has an upper rim that is correspondingly inclined; and means for anchoring the flange to a fixed part of the existing manhole structure.

REFERENCES:
patent: 3858993 (1975-01-01), Larsson et al.
patent: 3930739 (1976-01-01), Larsson et al.
patent: 4673310 (1987-01-01), Le Baron
patent: 4690584 (1987-09-01), Le Baron

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