Patent ID: 7648309

Claim:
An apparatus for compaction, breaking and rubblizing comprising: a first non-circular plate having a first plate flat portion and a first plate diameter; a second non-circular plate having a second plate flat portion and a second plate diameter substantially equivalent to said first plate diameter; and a third plate having a third plate first flat portion coupled to the first plate flat portion and a third plate second flat portion coupled to the second plate flat portion forming a non-circular multi-lobed roller assembly including a plurality of lobes, the third plate having a third plate diameter less than the first plate diameter and the second plate diameter; and a weld material substantially covering an outer edge of the third plate, the weld material having a thickness substantially equivalent to a difference between at least one of the first plate diameter and the third plate diameter, or the second plate diameter and the third plate diameter, the weld material filling in the region defined by the difference in diameters of the first and second plates and the third plate.