Patents by Inventor Montgomery W. Billau

Montgomery W. Billau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Contact pouring of molten metal from a vessel into a mold
    Patent number: 6138742
    Abstract: An apparatus for and method of pouring molten metal from a refractory vessel into the sprue of a mold where the vessel is in contact with the sprue. Molten metal is poured through the orifice of a nozzle in the bottom of the vessel. Laminar flow and velocity of the molten metal through the orifice are controlled by a stopper that extends from the orifice and also displaces molten metal in the sprue of the mold when the stopper is in the closed position to minimize excess buildup of solidified metal in the volume of the sprue. Filtering of dross can be accomplished in the refractory vessel and heating means can be provided to hold the molten metal at the appropriate temperature.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: October 31, 2000
    Assignee: Inductotherm Corp.
    Inventor: Montgomery W. Billau