Patent ID: 9381478
Filing Date: 2016-07-05
CPC Classification: B01F,B02C,F04D

Claim Text:
1. A rotary impeller, comprising: a solid disk-shaped body having a center bore, a first major face, an opposed major face, and an outer peripheral side edge face that is circular in plan and that extends along an outer diameter of said disk-shaped body; a plurality of separate, circumferentially-spaced apart, radially-extending grooves formed in said first major face, each of said grooves extending through the outer peripheral side edge face of said disk-shaped body and being of a depth that terminates a spaced distance from said opposed major face of the disk-shaped body such that said grooves do not extend fully through said disk-shaped body; and an array of separate, upstanding, circumferentially-spaced teeth that project from said first major face adjacent said grooves along said outer peripheral side edge face of said disk-shaped body, said array of teeth forming part of a surface of said outer peripheral side edge face of said disk-shape body; each of said grooves having a pair of side edges that extend to said outer peripheral side edge face of said disk-shaped body and that extend along a length of the groove; each of said teeth adjacent to one of said grooves having an end wall that extends upwardly from said first major face adjacent one of said side edges of one of said grooves such that each groove and pair of adjacent teeth form a channel extending through said outer peripheral side edge face of said disk-shaped body; and said array of teeth including adjacent teeth between which a groove does not extend and which form a channel therebetween which is smaller than said channel including one of said grooves such that said outer peripheral side edge face of said disk-shaped body includes said channels including one of said grooves and said smaller channels.