Patents by Inventor David L. Weekley

David L. Weekley 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).

  • Nozzle shroud for a molten metal stream
    Patent number: 4971232
    Abstract: A nozzle shroud for shielding the pouring of molten metal into a gas filled neutral atmosphere from a metallurgical vessel to a central trumpet associated with ingot molds and the like. The shroud is a vacuum formed fiber structure positioned in sealing relation with the metallurgical vessel nozzle by support the gas injection assembly providing a sealing relationship between the nozzle and pouring receiving receptacle.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: November 20, 1990
    Assignee: Vac Tec, Inc.
    Inventor: David L. Weekley
  • Apparatus for shielding a molten metal stream
    Patent number: 4840297
    Abstract: A shroud for shielding the pouring of molten metal in a neutral atmosphere from a metallurgical vessel to a center runner trumpet associated with bottom pour ingot molds or the like. The shroud is a vacuum formed fiber structure with a flat bottom and a contoured self-sealing top configured to seal against a metal ware extension from the metallurgical vessel which maintains the neutral atmosphere.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: June 20, 1989
    Assignee: Vac Tec, Inc.
    Inventors: David L. Weekley, Ivan Parker