Patent ID: 8146843

Claim:
A waste food disposer, comprising: a housing defining a grinding chamber having an inlet and an outlet; and a grinding mechanism disposed within the housing including: a shredder ring with a plurality of slots and teeth formed between adjacent slots; a grinding disc, disposed coaxially with the shredder ring and axially spaced from the shredder ring by a small gap; a motor for rotating the grinding disc relative to the shredder ring; wherein the grinding disc is a single plate with uniform depth and supports a number of pushers thereon; wherein the grinding disc extends radially beyond an inner surface of the shredder ring; wherein the grinding disc is spaced from a wall of the grinding chamber by a radial gap, the radial gap being non-uniform; and wherein the grinding disc has teeth formed by a plurality of peripheral recesses spaced about a radially outer periphery of the grinding disc, and in operation the teeth formed by the recesses of the grinding disc cooperate with the teeth of the shredder ring to tear waste matter being caught between the slots and the recesses.