Adjustable manhole cover support structure

Details Adjustable manhole cover support structure Adjustable manhole cover support structure

1978-08-16

1980-12-02

Leppink, James A.

Static structures (e.g., buildings)

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

404 26, E02D 2914

Patent

active

042363586

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 portion disposed on the frame, and a lateral support ring portion disposed on the adjusting ring. The adjusting ring portion has a peripheral inner seat for receiving the manhole cover. The lateral support ring portion is formed as a unit with the adjusting ring portion and projects generally rigidly upwardly therefrom to restrain the adjusted and elevated manhole cover against lateral movement relative to the frame.

REFERENCES:
patent: 3326100 (1967-06-01), White
patent: 3773428 (1973-11-01), Bowman
patent: 3891337 (1975-06-01), McCoy
patent: 3968600 (1976-07-01), Bowman

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