Patent ID: 8257148

Claim:
A knife assembly for a grinder comprising: a knife holder having spaced-apart arms having outwardly open slots, wherein each slot is adapted to receive one of the knife inserts and is defined at least in part by a bottom surface; and a plurality of knife inserts, each having a blade portion and a bottom face, wherein the bottom face of at least a first one of the knife inserts comprises a pair of spaced apart downwardly facing bearing portions and an upwardly extending recess between the bearing portions, wherein the upwardly extending recess is defined by a pair of end areas, each of which is located adjacent to one of the bearing portions and extends upwardly therefrom, in combination with a central area that is located between the spaced apart end areas, and wherein the pair of bearing portions of the first knife insert engage the bottom surface of the first slot and the upwardly extending recess is spaced from the bottom surface of the first slot between the bearing portions of the first knife insert and cooperates with the bottom surface of the first slot to define a void area between the bearing portions of the first knife insert, wherein the void area between the bottom surface of the first slot and the bottom face of the first knife insert is unoccupied when the first knife insert is positioned within the first slot.