Patent Number: 6,254,340

Title: Molten metal impeller

Abstract: An impeller for a molten metal pump having a cylindrical body comprised of a refractory material. The cylindrical body includes generally coplanar top and bottom surfaces. A central bore is provided in the top surface to provide a point for mating with a shaft. A plurality of circumferentially spaced passages extend from the top or bottom surface to a side wall of the impeller, each of the passages being separate and preferably having an inlet opening which is equal to or less than the corresponding outlet opening in size. A recess being optionally formed in the top or bottom surface, forming the initial inlet to the passages.

Inventors: Vild; Chris T. (Cleveland Heights, OH), Bright; Mark A. (Maple Heights, OH)

Assignee: Metaullics Systems Co., L.P.

International Classification: F04D 7/00 (20060101); F04D 7/06 (20060101); F04D 29/22 (20060101); F04D 29/18 (20060101); F04D 007/06 ()

Expiration Date: 07/03/2018