Patent ID: 6928799

Claim:
An apparatus for finely pulverizing lawn debris, comprising: a. a frame having attached thereto a suction hood, a suction and grinding chamber and a plurality of transportation wheels; b. a power source mounted on the suction and grinding hood, and operably connected to a central drive shaft to provide power for pulverization and distribution of said debris; c. a grinding blade set mounted for rotation on said central shaft for effecting further pulverization of said initially pulverized debris; d. a distributing plate mounted for rotation on said central shaft, said distributing plate having a plurality of curved impeller blades permanently attached to a perforated plate with an array of apertures therein for providing required suction for drawing the dry leaves through the suction hood and dispensing a high velocity stream of said pulverized debris uniformly over said lawn; and e. said grinding blade set comprises two to six pairs of blade elements, each pair having one fan blade and one knife edge blade, wherein said blade elements are arranged on said shaft so that said fan blades and said knife edge blades are alternately disposed.