Patents by Inventor Mark A. Ragen

Mark A. Ragen 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).

  • Thermo-mechanical Process for Martensitic Bearing Steels
    Publication number: 20140182747
    Abstract: A method for treating a steel bearing component includes subjecting the steel bearing component to a scouring treatment to impart compressive residual stress to a surface region thereof and subsequently nitriding the steel bearing component 1. The resulting steel bearing component exhibits a nitrided case depth of about 0.002-0.014 inches and a compressive residual stress value greater than ?120 ksi is achieved at a depth of 0.002 inches and ?20 ksi to a minimum depth of 0.010?. The steel bearing component may be a race and/or a rolling element, such as a ball.
    Type: Application
    Filed: December 20, 2013
    Publication date: July 3, 2014
    Applicant: AKTIEBOLAGET SKF
    Inventors: Bryan A. McCoy, Gregory A. Zimmerman, Don L. Anthony, Mark A. Ragen