Patents by Inventor Harold E. Helms

Harold E. Helms 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
    Patent number: 3950114
    Abstract: A turbine blade having a porous hollow sheet metal airfoil and a base defining a platform, stalk, and root. The airfoil portion is integral with an extension which lies within the blade stalk, the base being cast around this extension. The cast metal lies around the blade wall and also through tubes welded from wall to wall of the extension. The stalk also includes an opening to admit air to the interior of the blade for transpiration through the blade wall.
    Type: Grant
    Filed: February 23, 1968
    Date of Patent: April 13, 1976
    Assignee: General Motors Corporation
    Inventor: Harold E. Helms