Cover height adjuster

Details Cover height adjuster Cover height adjuster

1993-03-01

1994-11-01

Castellano, S.

Receptacles

Sectional

Telescoping

220484, 220 403, 220 37, 404 26, B65D 8876

Patent

active

053601319

ABSTRACT:
A cover height adjuster which can be used for a boundary box, a manhole cover, etc. in a paved location having two rings with interengaging sloping castellated end surfaces extending around the peripheries of at least three sectors of the rings and can vary the height of the upper ring upon its rotation over the lower ring. The upper surface of the upper ring may have a slope which engages a sloping surface of a cover assembly, so that relative rotation can also vary the slope of the cover.

REFERENCES:
patent: 599441 (1898-02-01), Dorr
patent: 4874105 (1989-10-01), Tetreault
patent: 4906128 (1990-03-01), Trudel

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