Patent ID: 6602462
Filing Date: 2003-08-05
Classification: B22D

Abstract:
A molten metal pump for transferring metal from a melt furnace by means of a transfer comprising upper and lower aligned portions said upper portion comprising a frame housing for attachment to the melt furnace, an inverter duty electric motor mounted within said housing frame; said lower portion attached to said upper portion and immersable into the melt furnace comprising a cylindrical casing having an opening at the bottom thereof, a transfer tube connected at one end to said opening, and an auger within said casing connected to said inverter duty electric motor by means of a shaft, said opening being located lower than a bottom flute of the auger, said motor being operable at a first speed to rotate said shaft to transfer metal downwardly into the transfer tube in order to maintain a predetermined head within the tube and being further operable at a second speed to transfer a measured quantity of molten metal from the tube.