Patent ID: 9505092
Filing Date: 2016-11-29
CPC Classification: B23P,C21D,C22F,F04D,Y10T

Claim Text:
1. A method of producing a fan wheel for a fan assembly comprising: (a) providing an aluminum base having an outer surface forming a truncated dome-shape; (b) providing an airfoil-shaped aluminum extrusion having at least one internal cavity; (c) cutting the aluminum extrusion into a plurality of fan blades; (d) defining a mounting orientation and position for each of the fan blades with respect to a projection contour on the base; (e) machine cutting a first end of each of the fan blades with a cutting head of a cutting machine to provide each fan blade with a compound cut profile that is curved in at least one direction and that is curved in at least one other direction to match the projection contour; and (f) flush mounting each of the fan blades to the base in the defined mounting orientation and position.