Patent ID: 7320192

Claim:
An apparatus for moving particulate matter, comprising: a body having a motor: a drive housing disposed on the body; a cavity disposed in the body, the cavity having a first side, a second side, and at least a partial semi-circular cross-sectional shape; a paddle assembly having a shaft and a plurality of paddles disposed therefrom, each paddle having a bottom wall and a distal end, wherein the distal end travels along the semi-circular cross-sectional shape of the cavity during operation, and the bottom wall extends along an entire width of the paddle between the first side wall and the second side wall of the cavity, wherein the bottom wall is arcuate about an axis parallel to the shaft, and wherein each paddle includes a pair of side walls that in combination with the bottom wall define an open region; and a drive mechanism disposed in the drive housing, the drive mechanism operatively connecting the motor and the shaft.