Patent ID: 7144202

Claim:
A silt fence machine for mounting to a three point hitch of a power unit comprising a frame having a leading end and a trailing end, and having a longitudinal axis, a mounting member attached to the leading end of the frame, the mounting member adapted to be detachably mounted to the three point hitch, a plow member retained to the trailing end of the frame, the plow member including a top side, a leading edge generally perpendicular to the longitudinal axis of the frame, and at least a third edge, the plow member comprising a stationary plate and a pivotable plate, the pivotable plate selectively disposed adjacent the stationary plate in a closed position thereof, the pivotable plate in its closed position disposed generally in parallel to the stationary plate and spaced apart therefrom a small distance, an elongate rod mounted at opposing ends thereof to one of the stationary plate and the pivotable plate, the elongate rod having a lower end adjacent a bottom of the leading edge of the plow member, the elongate rod oriented at substantially forty-five degrees from the leading edge of the plow member.