Patents by Inventor Craig K. Ball

Craig K. Ball 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).

  • Dual fuel path stem for a gas turbine engine
    Patent number: 4735044
    Abstract: A stem couples a fuel injector inlet to a fuel nozzle. The fuel nozzle includes a primary fuel flow portion and a secondary fuel flow portion. The stem includes an input end for receiving a primary fuel flow and a secondary fuel flow from the fuel injector inlet. The stem includes three concentric tubes with the first tube coupling the primary fuel flow from the injector to the primary portion of the nozzle. A second concentric tube couples the secondary fuel flow from the injector to the secondary portion of the nozzle. The primary fuel flow and the secondary fuel flow in the two concentric tubes are nonlinear with respect to the input and output ends of the stem. The third concentric tube provides structural support and an insulating space for the first two concentric tubes. Methods for constructing the stem are provided. Other embodiments are disclosed.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: April 5, 1988
    Assignee: General Electric Company
    Inventors: John M. Richey, Craig K. Ball