Patents by Inventor Paul Noles Crepeau

Paul Noles Crepeau 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).

  • Cast iron cylinder liner with laser-hardened flange fillet
    Patent number: 6732699
    Abstract: A cast iron cylinder liner for an engine has a body with a radial upper flange and a generally cylindrical wall extending axially from an inner portion of the flange. An arcuate fillet is formed at a juncture between the upper flange and an exterior of the cylindrical wall. To strengthen the juncture of thin wall liners, for example with wall thickness less than 2.5 mm, a portion adjacent the fillet is laser hardened to a selected depth of the wall, thus increasing resistance to stresses created in the wall when the liner is installed and operating in an engine.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: May 11, 2004
    Assignee: General Motors Corporation
    Inventors: Shekhar G. Wakade, Paul Noles Crepeau, Grant K. Tappen
  • CAST IRON CYLINDER LINER WITH LASER-HARDENED FLANGE FILLET
    Publication number: 20040065290
    Abstract: A cast iron cylinder liner for an engine has a body with a radial upper flange and a generally cylindrical wall extending axially from an inner portion of the flange. An arcuate fillet is formed at a juncture between the upper flange and an exterior of the cylindrical wall. To strengthen the juncture of thin wall liners, for example with wall thickness less than 2.5 mm, a portion adjacent the fillet is laser hardened to a selected depth of the wall, thus increasing resistance to stresses created in the wall when the liner is installed and operating in an engine.
    Type: Application
    Filed: October 4, 2002
    Publication date: April 8, 2004
    Inventors: Shekhar G. Wakade, Paul Noles Crepeau, Grant K. Tappen