Method and apparatus for elevating load-bearing access devices

Details Method and apparatus for elevating load-bearing access devices Method and apparatus for elevating load-bearing access devices

1978-03-02

1979-06-19

Byers, Jr., Nile C.

Road structure, process, or apparatus

Process

404 26, 210164, 52 20, E02D 2914

Patent

active

041585151

ABSTRACT:
This invention pertains to a method and apparatus whereby, when a thoroughfare is to be resurfaced, the covers for the openings that extend downwardly beneath such thoroughfares may be raised to a level corresponding to the raised level of the resurfaced thoroughfare. Such raising is accomplished without the need for digging up the framework that supported the cover.

REFERENCES:
patent: 2431082 (1947-11-01), Sayles
patent: 2593918 (1952-04-01), Redman
patent: 3240133 (1966-03-01), Ross
patent: 3385011 (1968-05-01), Sorrell
patent: 3408778 (1968-11-01), Mason
patent: 3891337 (1975-06-01), McCoy

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