Patent ID: 7735573

Claim:
A lawn perforating tool comprising: (a) an elongate handle portion having a proximal end and a distal end; (b) a working head transversely mounted to the distal end of said handle portion, said working head having at least one axle; and (c) an even number of perforating plates rotatably disposed about said axle, each of said plates comprising a central bore defining a bore axis and a plurality of radial arms extending from said central bore, wherein said radial arms alternately comprise a long tapered spike and a relatively shorter beveled spike support, at least one of which is positioned at an angle relative to a plane that is normal to the bore axis, further wherein said perforating plates are arranged opposite one another in facing pairs offset in such a manner such that at least one of the tapered spikes of a first plate extends between two tapered spikes of an opposing plate and at least one of the beveled spike supports of a first plate rests snugly against a side surface of a tapered spike on an opposing plate.