Patent ID: 9637883
Date: 2017-05-02
CPC Classifications: E02D,F24T,Y02E

Claim:
1. A grout plug assembly for removable, threaded engagement with a rotary drivable coupler having an interior, an exterior, and an axis of rotation, the grout plug assembly comprising: an externally threaded sleeve having a central opening, the externally threaded sleeve being removably threadable into the interior of the drivable coupler so that the externally threaded sleeve has the same axis of rotation as the drivable coupler; at least one internal sleeve inserted into the central opening of the externally threaded sleeve so disposed within the interior of the drivable coupler to have the same axis of rotation when the externally threaded sleeve is threaded into the interior of the drivable coupler; and a disk-shaped spacer having at least one opening for axial alignment with the central opening of the externally threaded sleeve and the axis of rotation of the drivable coupler when the disk-shaped spacer is disposed within the interior of the drivable coupler, wherein the grout plug assembly is configured to rotate upon rotation of the disk-shaped spacer and wherein the opening in the disk-shaped spacer is configured to accept at least a portion of an end of a grout tube.