Patent ID: 9532682
Date: 2017-01-03
CPC Classifications: A47J,B02C

Claim:
1. In a food grinder having a frame, a grinding chamber, a hopper for holding food ingredient to be ground with a chute for selectively passing the food ingredient to the grinding chamber, the improvement being a coarseness controllable grinding mechanism, comprising; an electrical, rotary, drive motor with a motor frame supporting a fixed stator surrounding a rotor mounted for elongate movement relative to the stator, said rotor fixedly attached to a central, rotary, motor axle with opposite ends that are accessible outside of opposite ends of the motor frame, respectively; a fixed grinding burr contained within the grinding chamber; a rotary grinding burr contained within the grinding chamber and separable from the fixed grinding burr by a grinding gap; means attaching the rotary grinding burr to one of the opposite ends of the motor axle; and a controllable electromechanical adjustment device engaged with another one of the opposite ends of the motor axle for automatically selectively, longitudinally moving the motor axle relative to the motor frame to adjust the grinding gap.