Patents by Inventor Carrol R. Thurn

Carrol R. Thurn 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).

  • Patent number: 4422625
    Abstract: A steel ladle is provided with a burn resistant liner generally conforming to the inner contour of the ladel but spaced therefrom. A layer of sand is placed within the space between the ladle and liner to support the liner when loaded with a non-ferrous melt. The sand and the liner are retained within the ladle by a refractory cap extending between the upper edges of the liner and the ladle on top of the sand layer. A method of preparing a ladle to receive a non-ferrous melt involves lining the ladle interior with a burn resistant lining, supporting the lining on a sand layer disposed between the ladle interior and the lining, and retaining the sand and the liner within the ladle so they will not separate therefrom during pouring.
    Type: Grant
    Filed: February 23, 1982
    Date of Patent: December 27, 1983
    Assignee: FMC Corporation
    Inventor: Carrol R. Thurn