Manhole cover support

Details Manhole cover support Manhole cover support

1979-09-10

1981-08-04

Byers, Jr., Nile C.

Road structure, process, or apparatus

Pavement

Vault cover-closure

210163, 52 20, E01D 700

Patent

active

042819440

ABSTRACT:
An adjustable support for varying the height of a manhole cover after a street surface has been resurfaced is presented including vertically disposed posts in a downward position on each end of each adjustable section. These posts provide the location for bolts connecting adjacent ends of two adjustable sections so that the entire structure permits the units to be expanded and contracted to fit a plurality of different diameters of manholes. Also an upwardly extending radially outwardly positioned projection on the outer surface of the base member of the adjustable section ensures a more stable engagement of the base member of the adjustable section with the manhole housing on which it is adapted to rest.

REFERENCES:
patent: 1384712 (1921-07-01), Shanley
patent: 1987502 (1935-01-01), Born
patent: 2593918 (1952-04-01), Redman
patent: 3218943 (1965-11-01), Bowman
patent: 3773428 (1973-11-01), Bowman
patent: 3891337 (1975-06-01), McCoy
patent: 3968600 (1976-07-01), Bowman
patent: 4097171 (1978-06-01), Fier
patent: 4158515 (1979-06-01), Helms
patent: 4187647 (1980-02-01), Hall
patent: 4188151 (1980-02-01), Hall

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