Patent ID: 6991432

Claim:
A fan assembly for processing materials, the fan assembly comprising: two circular side members circumscribing a hollow hub through the center; a plurality of fan blades secured between the circular side members to form radial channels extending from the hub such that materials that enter into the hub flow through the radial channels, out the circumference of the fan assembly, the fan blades having secured to at least one side a layer of plates made of a material harder than the material of the fan blades, the plates being in an alternating adjacent arrangement to form irregular seams; and a layer of tiles of the same material as the plates secured along the intersection of the fan blades and circular side members, the tiles being in an alternating adjacent arrangement to form irregular seams, the plates and tiles being capable of flexible movement in relation to other plates and tiles so as to prevent breaking or cracking of the plates and tiles when the fan assembly is in motion.