Patent ID: 8678306
Filing Date: 2014-03-25
Classification: B02C,F04D

Abstract:
1. A grinder comprising: a housing having a top wall, a bottom wall, and a plurality of sidewall sections; a shaft rotatably mounted in the housing between the sidewall sections; a first cutter disc mounted on the shaft and rotatable therewith; a plurality of hammers mounted on the first cutter disc and extending outwardly past an outer edge of the first cutter disc; a fan assembly mounted inside the housing below the first cutter disc, the fan assembly comprising: a fan disc secured to the shaft and rotatable therewith, the fan disc having a direction of rotation; a plurality of fan blades connected to a top surface of the fan disc; each said fan blade having a web extending upwardly from said fan disc and a top flange extending outwardly from said web in said direction of rotation of said fan disc and, the top and bottom walls of the housing are each divided into first sections and second sections, wherein the second sections form part of a door to the housing, and a line of division between the first sections and the second sections extends through an axis of rotation of the shaft.