Patents by Inventor Charles S. Leveritt

Charles S. Leveritt 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).

  • Dynamic process for enhancing the wear resistance of ferrous articles
    Patent number: 7669358
    Abstract: A dynamic process for increasing the wear life of ferrous articles subjected to a high-temperature environment created by combustion of a propellant or fuel comprises selecting the propellant or fuel so that its combustion products include relatively large amounts of nitrogen, which nitrogen forms a protective nitride layer on the surface of the ferrous article. Disclosed is a specific embodiment of the invention for prolonging the wear life of gun barrels.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: March 2, 2010
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Paul J. Conroy, Charles S. Leveritt, John D. Demaree, James Hirvonen
  • Dynamic process for enhancing the wear resistance of ferrous articles
    Patent number: 7191558
    Abstract: A dynamic process for increasing the wear life of ferrous articles subjected to a high-temperature environment created by combustion of a propellant or fuel comprises selecting the propellant or fuel so that its combustion products include relatively large amounts of nitrogen, which nitrogen forms a protective nitride layer on the surface of the ferrous article. Disclosed is a specific embodiment of the invention for prolonging the wear life of gun barrels.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: March 20, 2007
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Paul J. Conroy, Charles S. Leveritt, John D. Demaree, James Hirvonen