Manhole elevation means

Claim 1

A KIT FOR RAISING THE LEVEL OF A MANHOLE STRUCTURE A GIVEN DISTANCE AS REQUIRED BY THE RAISING OF A STREET LEVEL BY A GIVEN DISTANCE BY RECAPPING OF THE STREET SURFACE, WHEREIN THE MANHOLE STRUCTURE INCLUDES AN ANNULAR RIM MEMBER WITH AN UPRIGHT CIRCUIT RIM FLANGE PRESENTING A SUBSTANTIALLY FLAT ANNULAR SURFACE AND WITH A INNER CIRCUMFERENTIAL UPWARDLY FACING SHOULDER SPACED BELOW THE FLAT ANNULAR SURFACE OF THE RIM FLANGE, AND FURTHER INCLUDES A MANHOLE COVER WHICH RESTS ON THE INNER CIRCUMFERENTIAL SHOULDER INSIDE THE RIM FLANGE SUBSTANTIALLY FLUSH WITH THE SUBSTANTIALLY FLAT ANNULAR SURFACE OF THE RIM FLANGE, THE THICKNESS OF THE MANHOLE COVER AROUND ITS PERIPHERY BEING SUBSTANTIALLY GREATER THAN THE GIVEN DISTANCE, THE KIT COMPRISING: AN AUXILIARY RING OF SUBSTANTIALLY THE SAME INSIDE DIAMETER AS THE RIM FLANGE FOR POSITIONING ON THE SUBSTANTIALLY FLAT ANNULAR SURFACE OF THE RIM FLANGE TO SERVE AS AN UPWARD EXTENSION THEREOF, SAID AUXILIARY RING BEING OF UNIFORM SUBSTANTIALLY RECTANGULAR CONFIGURATION IN RADIAL CROSS SECTION AND OF A WIDTH SUBSTANTIALLY EQUAL TO THE WIDTH OF SAID RIM FLANGE AND HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED BORES EXTENDING SUBSTANTIALLY PARALLEL TO THE AXIS THEREOF; A CORRESPONDING PLURALITY OF FASTENING ELEMENTS DIMENSIONED TO EXTEND THROUGH SAID BORES AND ADAPTED TO ENGAGE THE RIM FLANGE TO ANCHOR THE AUXILIARY RING TO THE MANHOLE STRUCTURE; AND A SPACER RING HAVING AN OUTSIDE DIAMETER SUBSTANTAILLY EQUAL TO THE INSIDE DIAMETER OF THE RIM FLANGE TO REST ON THE CIRCUMFERENTIAL SHOULDER OF THE ANNULAR RIM MEMBER.