Patents by Inventor Douglas B. Ballantyne

Douglas B. Ballantyne 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).

  • Gas turbine bladed disk assembly
    Patent number: 4595340
    Abstract: Disclosed is a bladed disk assembly having a new and improved rotor blade. The blade includes a shank and dovetail extending from an airfoil portion thereof. The shank includes a pocket extending therein from an end surface thereof. The shank pocket allows for reduced weight of the blade while maintaining acceptable bending stiffness thereof. In an exemplary embodiment of the invention, the bladed disk assembly is effective for being interchangeable with a blisk assembly having an inlet hub radius ratio of about less than about 0.5 and a root solidity of greater than about 2.2.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: June 17, 1986
    Assignee: General Electric Company
    Inventors: David D. Klassen, Douglas B. Ballantyne