Patents by Inventor Chris K. Fahy

Chris K. Fahy 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).

  • Electric motor rotor lamination treatment to prevent rotor soldering
    Patent number: 5488984
    Abstract: A method for the mass production of squirrel-cage rotors for electric motors includes the step of die casting-in-place rotor bars within the slots formed by stacked steel laminations. The molten metal alloy utilized in the method is high conductivity aluminum. Before introduction of the molten aluminum, the steel laminations are treated in a solution of sodium nitrite, sodium tetraborate decahydrate, and a wetting agent to prevent soldering of the aluminum to the steel.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: February 6, 1996
    Assignee: A. O. Smith Corporation
    Inventor: Chris K. Fahy