Patent ID: 6682258
Filing Date: 2004-01-27
Classification: E02D

Abstract:
An assembly for adjusting the elevation of a structure, comprising a base rim, the base rim comprising an outer wall and a support shoulder positioned on an inside of the wall at a height below a top of the rim and extending towards the center of the base rim, the support shoulder having at least one protrusion;a cover configured to fit with the base rim and in contact with the support shoulder, the cover having at least one indentation which fits with the protrusion of the support shoulder in combination with an adapter comprising a lower member positionable within the wall of the base rim and in contact with the support shoulder; and an upper member extending outward from the lower member to receive the cover and extending upwardly from the top of the base rim, the adapter having at least one adapter protrusion which connects the upper and lower members, the adapter protrusion configured to fit with the support shoulder protrusion and the cover indentation, whereby the elevation of a structure may be increased by inserting the adapter between the base rim and the cover and decreased by removing the adapter from between the base rim shoulder and the cover.