Patents by Inventor John W. Hatfield

John W. Hatfield 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).

  • Reinforced wall structure for a transformer tank
    Patent number: 4834257
    Abstract: A reinforced wall structure for a transformer tank characterized by a tank having opposite tank walls and braces on the walls for stiffening the walls against deflection. A transformer assembly including a transformer mounting end frame and a transformer within the end frame is mounted in the tank with the end frames adjacent to the braces so as to limit lateral movement of the assembly when an overcurrent condition occurs. A cooling fin assembly is mounted on each tank wall on the side opposite the braces.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: May 30, 1989
    Assignee: Westinghouse Electric Corp.
    Inventors: William J. Book, John W. Hatfield