Patent ID: 9731256
Date: 2017-08-15
CPC Classifications: B01F,Y10T

Claim:
1. An impeller blade, comprising: a central base portion having a center axis; at least a p air of impeller blades extending outwardly from the central base portion, each impeller blade comprising an extension; a leading edge formed on each of the impeller blades, each leading edge defined by an outer periphery of the central base portion, each leading edge forming a continuous curve that is defined as approximately one quarter of an ellipse having a radius that decreases outwardly from the central base portion toward a radial tip of the corresponding impeller blade, and wherein the approximately one quarter of an ellipse of each leading edge further comprises a short axis equal to a long axis thereof divided by between approximately three and four; and each extension being projected from the corresponding impeller blade opposite of the leading edge.