Patents by Inventor Michael James Fisher

Michael James Fisher 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).

  • Through airlock for refining furnance
    Patent number: 5656235
    Abstract: An airlock of integral one piece construction for the trough of a refining furnace, the airlock having opposed vertical walls with portions that fit snugly within the trough opposed vertical walls and downwardly angled extensions which, with a top wall that connects the side wall extensions, define a snout whose open part projects into the molten metal in the furnace chamber to dynamically seal the trough from entry of air.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: August 12, 1997
    Assignee: Foseco International Limited
    Inventors: Raymond Jerome Sarlitto, Thomas Bisco, Michael James Fisher