US 2011/0215179 A1 · GRINDER

Abstract

A grinder includes a generally vertical, rotatable shaft having at least one set of cutter blades driven thereby and a fan assembly mounted on the shaft below the cutter blades in position to receive output therefrom. The fan assembly includes a fan disc secured to the shaft and rotatable therewith. Fan blades are secured to the fan disc in a generally radial orientation. Each fan blade includes a bottom flange secured to a top surface of the fan disc, a web extending upwardly from the bottom flange and a top flange extending outwardly from the web in a direction of rotation of the fan disc. The fan blades are preferably moveably mounted to the fan disc such that the angle of the fan blades relative to a true radial orientation can be adjusted.

Claims19

Dependent claims

A grinder, comprising:

a housing having 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;
angle deflectors mounted on the sidewall sections, the angle deflectors extending inwardly from the sidewall section and having an edge in general alignment with the outer edge of the cutter disc and defining a gap therebetween, the hammers each rotating in closely spaced relation to a top surface of the angle deflectors;
and,
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;
and,
one or more fan blades connected to a top surface of the fan disc.

7 more elements

Dependencies are inferred from the claim text.

Grinder

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Grinder

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Abstract

Claims19