Patents by Inventor David J. Abascal

David J. Abascal 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).

  • Adjustable tuyere
    Patent number: 4340209
    Abstract: A tuyere for use in a blast furnace which includes choke means for adjusting the orifice of the tuyere to accomodate varying blast volumes. The choke fits into the tuyere and is adapted to move forward and backward as required by the blast.
    Type: Grant
    Filed: April 13, 1981
    Date of Patent: July 20, 1982
    Assignee: Kaiser Steel Corporation
    Inventor: David J. Abascal