Patent ID: 6276899
Filing Date: 2001-08-21
Classification: B23H,B23P,F01D,F04D,F05D,Y10T

Abstract:
A method of manufacturing a pump impeller, comprising:machining a core portion of the impeller, the core portion having a first surface and a second surface;machining a shroud portion of the impeller, having a first surface and a second surface, wherein the second surface of the shroud portion is machined to mate with the first surface of the core portion;machining a hub portion of the impeller, having a first surface and a second surface, wherein the first surface of the hub portion is machined to mate with the second surface of the core portion;removing material from the core portion of the impeller, such that the remaining material forms one or more vanes, each of the one or more vanes having first and second surfaces formed from the first and second surface of the core portion, surfaces of each vane remains the same as the profile of the first and second surfaces of the core portion;placing the second surface of each vane on the first surface of the hub portion;placing the second surface of the shroud portion on the first surface of vane;coupling the hub, vane and shroud portions together to form an impeller.