Adjustable manhole cover support structure

Details Adjustable manhole cover support structure Adjustable manhole cover support structure

1974-08-05

1976-07-13

Purser, Ernest R.

Static structures (e.g., buildings)

With entrance for persons or objects in horizontal or...

404 26, E02D 2914

Patent

active

039686000

ABSTRACT:
An adjustable manhole cover support structure including a peripheral frame adapted for placement in the opening of a manhole housing, a peripheral manhole adjusting ring disposed on the frame, and a lateral support ring disposed on the adjusting ring. The adjusting ring has a peripheral inner seat for receiving the manhole cover. The lateral support ring retains the manhole cover in fixed horizontal position.

REFERENCES:
patent: 1639495 (1927-08-01), Frane
patent: 2346361 (1944-04-01), Cupido
patent: 3408778 (1968-11-01), Mason

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