Patents by Inventor Kevin James Sawley

Kevin James Sawley 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).

  • Railway wheels resistant to martensite transformation
    Publication number: 20040026944
    Abstract: Steels having a pearlitic structure and containing 0.60 to 1.0 weight percent carbon, 1.1 to 3.0 weight percent silicon, 0.45 to 0.85 weight percent manganese, less than 0.050 weight percent sulfur and less than 0.050 weight percent phosphorus, with the remainder of said steel being iron and incidental impurities, can be used to make railway wheels that are resistant to martensite transformations and, hence, spalling. The addition of 0.50 to 1.0 weight percent chromium to such steels further improves their resistance to spalling.
    Type: Application
    Filed: August 5, 2003
    Publication date: February 12, 2004
    Inventors: Daniel Hunter Stone, Kevin James Sawley
  • Railway wheels resistant to martensite transformation
    Patent number: 6632297
    Abstract: Steels having a pearlitic structure and containing 0.60 to 1.0 weight percent carbon, 1.1 to 3.0 weight percent silicon, 0.45 to 0.85 weight percent manganese, less than 0.050 weight percent sulfur and less than 0.050 weight percent phosphorus, with the remainder of said steel being iron and incidental impurities, can be used to make railway wheels that are resistant to martensite transformations and, hence, spalling. The addition of 0.50 to 1.0 weight percent chromium to such steels further improves their resistance to spalling.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: October 14, 2003
    Assignee: Transportation Technology Center, Inc.
    Inventors: Daniel Hunter Stone, Kevin James Sawley
  • Railway wheels resistant to martensite transformation
    Patent number: 6387191
    Abstract: Steels having a pearlitic structure and containing 0.60 to 1.0 weight percent carbon, 1.1 to 3.0 weight percent silicon, 0.45 to 0.85 weight percent manganese, less than 0.050 weight percent sulfur and less than 0.050 weight percent phosphorus, with the remainder of said steel being iron and incidental impurities, can be used to make railway, wheels that are resistant to martensite transformations and, hence, spalling. The addition of 0.50 to 1.0 weight percent chromium to such steels further improves their resistance to spalling.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: May 14, 2002
    Assignee: Transportation Technology Center, Inc.
    Inventors: Daniel Hunter Stone, Kevin James Sawley