Patent ID: 8002979

Claim:
A kitchen-sink waste-disposal system comprising: an electric motor; a disposal inlet connected to a kitchen-sink drain through which the kitchen-sink waste-disposal system receives waste and water from the kitchen-sink drain; an upper outlet to which ground waste and water is directed when the electric motor is operating; a lower outlet to which received water flows; a grinding chamber that includes a grinding turntable driven by a motor shaft that interconnects the electric motor to the grinding turntable, a number of hammers affixed to the grinding turntable, and a radial internal outlet through which ground waste and water flows to a centrifugal-pump chamber below the grinding chamber; and the centrifugal-pump chamber within which an impeller disk is mounted to the motor shaft, the impeller disk including a plurality of impeller blades that, when the impeller disk is rotated by rotational motion transferred to the motor shaft by the electrical motor, force ground waste and water out to the upper outlet in the wall of the centrifugal pump chamber, the impeller disk also including a plurality of apertures through which water flows to the lower outlet below the impeller disk.