Patent ID: 8033757

Claim:
An auger grouted displacement pile comprising an elongated pipe with a hollow central chamber, the pipe having a top section and a bottom section, the bottom section further including a soil displacement head with: at least one lateral compaction plate, the widest of which establishes a bore diameter with a regular diameter, each plate having a diameter that is greater than the pipe diameter; a helical blade coiled about the lateral compaction plate, the helical blade having a leading edge and a trailing edge, the bottom section further including an opening, proximate to the trailing edge, in fluid communication with the central chamber, the helical blade having a first handedness configured to move material in the direction of the top section; a deformation structure disposed above the widest lateral compaction plate for cutting into the bore diameter after the material has been compacted by the widest lateral compaction plate, thus forming irregularities in the bore diameter.