Patents by Inventor Christopher Johnston

Christopher Johnston 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).

  • Turbine blade airfoil
    Patent number: 6769878
    Abstract: A turbine blade including an airfoil having a profile in accordance with Table 1 is disclosed. The turbine blade has a plurality of cooling passages extending radially outward through the airfoil. The aerodynamic profile of the airfoil has been reconfigured to further reduce overall heat load to the airfoil while paying particular attention to the leading edge region. Specifically, the airfoil leading edge, which is the life-limiting location of the turbine blade has been reconfigured to lower heat load and allow for increased cooling, thereby increasing turbine blade life.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: August 3, 2004
    Assignee: Power Systems Mfg. LLC
    Inventors: David G. Parker, Jeffrey S. Taylor, Christopher Johnston, J. Page Strohl