Multicomponent wales and bases for manhole cover supports

Details Multicomponent wales and bases for manhole cover supports Multicomponent wales and bases for manhole cover supports

1989-06-06

1990-10-16

Massie, Jerome W.

Road structure, process, or apparatus

Pavement

Vault cover-closure

52 20, E02D 2914

Patent

active

049630539

ABSTRACT:
An improvement is shown in a manhole cover support having a metal body comprising a base portion with a peripheral ledge portion that projects inwardly, a lateral keeper portion that extends from the base and rises from the outer edge of the ledge portion, and a reinforcing wale that is substantially coextensive with the top of the keeper portion and projects outwardly therefrom, the wale and/or the base portion being box members. The improvement comprises having a substantial part of a box member constituted of at least one piece of metal that is distinct from the rest of the body structure and is attached thereto.

REFERENCES:
patent: 1908909 (1933-05-01), Manz
patent: 3773428 (1973-11-01), Bowman
patent: 4302126 (1981-11-01), Fier
patent: 4582450 (1986-04-01), Neil
patent: 4637752 (1987-01-01), Centa
patent: 4834574 (1989-05-01), Bowman
patent: 4867601 (1989-09-01), Bowman
One page from Spec. No. 715-713, 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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