Patent ID: 8820539

Claim:
A motor driven crusher for crushing material, the crusher comprising: a bucket; a plurality of shafts removably and rotatably coupled to the bucket and operationally coupled to the motor, wherein axes of the plurality of shafts are substantially parallel; a sub-base removably securing the plurality of shafts within the bucket, wherein the sub-base is coupled to a bottom portion of the bucket below the plurality of shafts; a plurality of crushing agitators coupled to each shaft of the plurality of shafts, wherein the crushing agitators each comprise a protrusion; and a plurality of screening spaces each having a predetermined spacing, wherein material placed on a top side of the crusher is agitated and crushed by the protrusions of the plurality of crushing agitators in response to rotation of the plurality of shafts, screening small material through the plurality of screening spaces while crushing the larger material on the top side of the crusher to fit within the plurality of screening spaces.