Adjustable manhole frame and method of construction and installa

Details Adjustable manhole frame and method of construction and installa Adjustable manhole frame and method of construction and installa

1983-08-16

1985-08-20

Novosad, Stephen J.

Road structure, process, or apparatus

Pavement

Vault cover-closure

52 21, 249 11, 249160, 264 32, 264278, E02D 2914, B29C 112

Patent

active

045361037

ABSTRACT:
An adjustable cast iron or ductile iron manhole frame and method of construction utilizing a formed concrete base or a base of brick and cement mortar that supports both the frame and the pavement. The height and angle of the frame are determined by the method of construction which sets the height and angle of the formed concrete base. The frame is further adapted to receive and hold the manhole cover, and the frame includes an arched section to hold it securely to the concrete base or to filler material when in a raised position.

REFERENCES:
patent: 736586 (1903-08-01), Dougherty
patent: 823963 (1906-06-01), McNamire
patent: 1891160 (1932-12-01), Jespersen
patent: 2593918 (1952-04-01), Redman
patent: 3815214 (1974-06-01), Kyle, Sr.
patent: 3976276 (1976-08-01), Watson
patent: 4188151 (1980-02-01), Hall
patent: 4318880 (1982-03-01), McIntosh et al.

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