Patents by Inventor Franz Waldemar Ernst Hugo

Franz Waldemar Ernst Hugo 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).

  • Liquid metal bath furnace and casting method
    Patent number: 6308767
    Abstract: In a casting furnace employing a liquid metal bath to allow directional solidification of an article from a melt, and a method of operating such a furnace, a system is provided for lowering the mold from within a heating chamber into a liquid metal bath situated immediately beneath the heating chamber. An automated system is provided for automatically maintaining the level of the liquid metal bath at a relatively constant position immediately beneath the heating chamber, wherein simultaneously upon the level of the bath having risen due to immersion of the mold within the bath, the bath is lowered to thereby permit the level of the liquid metal bath to be maintained in a substantially fixed position.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: October 30, 2001
    Assignees: General Electric Company, ALD Vacuum Technologies
    Inventors: Franz Waldemar Ernst Hugo, Ulrich Betz, Helmut Mayer