Patents by Inventor Mark Sheffield

Mark Sheffield 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).

  • Third stage turbine airfoil
    Patent number: 7632072
    Abstract: The present invention provides an airfoil for a third stage blade having an external surface with first and second sides. The external surface extends spanwise between a hub and a tip and streamwise between a leading edge and a trailing edge of the airfoil. The external surface includes a contour substantially defined by Table 1 as listed in the specification.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: December 15, 2009
    Assignee: Rolls-Royce Power Engineering PLC
    Inventor: Mark Sheffield
  • Third stage turbine airfoil
    Publication number: 20070183895
    Abstract: The present invention provides an airfoil for a third stage blade having an external surface with first and second sides. The external surface extends spanwise between a hub and a tip and streamwise between a leading edge and a trailing edge of the airfoil. The external surface includes a contour substantially defined by Table 1 as listed in the specification.
    Type: Application
    Filed: December 19, 2006
    Publication date: August 9, 2007
    Inventor: Mark Sheffield