Patents by Inventor Mark W. Gillman

Mark W. Gillman 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).

  • Piston with cast-in undercrown pins for increased heat dissipation
    Patent number: 6840156
    Abstract: A cast engine piston has a crown with a combustion surface and an undercrown for exposure to crankcase fluids. A plurality of pins extend from the undercrown to increase the surface area of the undercrown. The pins draw heat from the crown and dissipate the heat to the crankcase fluids. Crankcase oil may be sprayed, splashed, or misted against the pins to further increase heat dissipation.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: January 11, 2005
    Assignee: General Motors Corporation
    Inventors: Mark W. Gillman, Rodney K. Elnick, Todd R. Ridley
  • PISTON WITH CAST-IN UNDERCROWN PINS FOR INCREASED HEAT DISSIPATION
    Publication number: 20040261612
    Abstract: A cast engine piston has a crown with a combustion surface and an undercrown for exposure to crankcase fluids. A plurality of pins extend from the undercrown to increase the surface area of the undercrown. The pins draw heat from the crown and dissipate the heat to the crankcase fluids. Crankcase oil may be sprayed, splashed, or misted against the pins to further increase heat dissipation.
    Type: Application
    Filed: June 24, 2003
    Publication date: December 30, 2004
    Inventors: Mark W. Gillman, Rodney K. Elnick, Todd R. Ridley