Patents Assigned to Vac Tec, Inc.
  • 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