Patent ID: 8615977

Claim:
A mulching blade for mounting on a rotary mower comprising: an elongated flat member made of high carbon heat treated alloy steel, the elongated flat member defining a longitudinal axis and having opposed end edges and opposed side edges, said blade adapted for mounting onto said rotary mower for rotation about a center axis extended perpendicular to a plane created by the rotation, the center axis separating the blade into a pair of opposed elongated end portions extended from said center axis; said blade as rotated about said center axis defining a leading edge and a trailing edge with a transition surface extending between said leading and trailing edges on each of the opposed elongated end portions; said leading edges being sharpened to 35 degrees; said trailing edges each having an upwardly deflected trailing face in order to create lift as the blade is rotated, said face being upwardly deflected at an angle between 45 and 65 degrees and further being offset 9.8 degrees along the longitudinal axis relative to the leading edge; and, both said transition surface and said trailing face further containing a plurality of jagged teeth, the number of teeth being substantially enough to cover the respective face and surface and extending outwardly therefrom, the teeth having a root width of not less than 0.1 inches and a height of 0.068 inches.