Patent ID: 6435764
Filing Date: 2002-08-20
Classification: E02D

Abstract:
An assembly for adjusting the elevation of a structure having a base rim surrounded by pavement, the base rim comprising an outer wall and a support shoulder extending inwardly from the wall and spaced downwardly from an upper end thereof, the assembly comprising a cover, and an adapter formed in a single piece to support the cover thereon and having upper and lower members, the lower member being receivable within the wall of the base rim to be supported on the shoulder thereof, the upper member extending outwardly of the lower member to receive the cover therewithin and upwardly to engage the upper end of the base rim and form an upward extension thereof, the lower member being formed with a plurality of inwardly extending protrusions distributed to form spaces therebetween and interconnecting the upper and lower members to form steps at the protrusions, the cover being receivable within the upper member to be supported on the lower member, the cover being formed with a plurality of indentations in a lower surface thereof, the indentations being dimensioned and disposed to receive the adapter protrusions therewithin, portions of the cover above the indentations being dimensioned and disposed to be supported on the steps, whereby the elevation of a structure may be increased by supporting the assembly on the base rim of the structure and decreased by removing the adapter from between the base rim shoulder and the cover.