Patent ID: 9650803
Date: 2017-05-16
CPC Classifications: E02D,E04H

Claim:
1. A tubular insert sleeve system, comprising: a tubular insert sleeve for insertion into an excavated hole, the tubular insert sleeve comprising: at least two longitudinally extending segments adapted to cooperate with each other to form the tubular insert sleeve; the tubular insert sleeve having a cylindrical main portion having a pre-determined first external diameter selected to fit in the excavated hole so that an exterior surface of the main portion retains walls of the excavated hole when the tubular insert sleeve is inserted therein; the main portion extending from a bottom end of the tubular insert sleeve adapted for insertion into the excavated hole toward an upper portion of the tubular insert sleeve adjacent an upper end of the tubular insert sleeve remote from the bottom end; the upper portion having a pre-determined second external diameter greater than the first external diameter and selected to be larger than the excavated hole; the main portion being longitudinally substantially longer than the upper portion; there being a discontinuity between the first external diameter and the second external diameter so that the upper end of the sleeve defines an outwardly extending annular flange providing a bearing surface for removal of the tubular insert sleeve from the excavated hole; the tubular insert sleeve being open at the bottom end; and a snug fitting and removable safety cover adapted to extend over the upper end of the tubular insert sleeve in order to cover the excavated hole; further comprising: at least one sleeve fastening aperture defined through the tubular insert sleeve adjacent the upper end thereof; the at least one sleeve fastening aperture being adapted to receive at least one vermiform fastener for fastening the safety cover to the tubular insert sleeve; at least one cover fastening aperture defined through the safety cover; the at least one cover fastening aperture being adapted to receive the at least one vermiform fastener for fastening the safety cover to the tubular insert sleeve; the at least one cover fastening aperture being disposed in a covering face of the safety cover, inwardly of an annular rim of the safety cover.