Patents by Inventor Donald F. Tranter

Donald F. Tranter 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).

  • Products with improved wear resistance/iron nitride layer
    Patent number: 4904316
    Abstract: An epsilon iron nitride surface layer of high surface wear resistance is formed on a steel component by gas nitriding or nitrocarburizing and, according to the invention, includes the preliminary step of heating the component to the nitriding temperature in an atmosphere which is inert to the metal of the component.
    Type: Grant
    Filed: October 25, 1988
    Date of Patent: February 27, 1990
    Assignee: Lucas Industries Public Limited Company
    Inventors: Cyril Dawes, Donald F. Tranter
  • Method of improving surface wear qualities of metal components
    Patent number: 4793871
    Abstract: A method is disclosed for subjecting a steel component made of a non-alloy or fine grained steel to a hardening treatment. An epsilon iron nitride surface layer of high surface area resistance is formed on the steel component by gas nitriding or nitrocarburizing and includes the preliminary step of heating the component to the nitriding temperature in an atmosphere which is inert to the metal of the component.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: December 27, 1988
    Assignee: Lucas Industries Public Limited Company
    Inventors: Cyril Dawes, Donald F. Tranter
  • Making of steel component
    Patent number: 4710238
    Abstract: A component formed of interstitial free steel is heated in a gaseous atmosphere containing 15% by volume of a nitrogen doner, e.g. ammonia, at about 500.degree. C. to about 740.degree. C. for about 30 minutes to about 4 hours to form an epsilon iron nitride surface layer, and a layer of nitrides of trace alloying elements below the surface layer.
    Type: Grant
    Filed: February 4, 1986
    Date of Patent: December 1, 1987
    Assignee: Lucas Industries Public Limited Company
    Inventors: Cyril Dawes, Donald F. Tranter