Patents by Inventor Mark S. Kuehn

Mark S. Kuehn 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).

  • Reverse flow engine core having a ducted fan with integrated secondary flow blades
    Patent number: 8667775
    Abstract: Secondary air flow is provided for a ducted fan having a reverse flow turbine engine core driving a fan blisk. The fan blisk incorporates a set of thrust fan blades extending from an outer hub and a set of integral secondary flow blades extending intermediate an inner hub and the outer hub. A nacelle provides an outer flow duct for the thrust fan blades and a secondary flow duct carries flow from the integral secondary flow blades as cooling air for components of the reverse flow turbine engine.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: March 11, 2014
    Assignee: The Boeing Company
    Inventors: Michael K. Kisska, Norman H. Princen, Mark S. Kuehn, Gary B. Cosentino
  • Coannular ducted fan
    Patent number: 8667774
    Abstract: Secondary air flow is provided for a ducted fan having an engine core driving a fan blisk. The fan blisk incorporates a set of thrust fan blades extending from an outer hub and a set of integral secondary flow blades extending intermediate an inner hub and the outer hub. A nacelle provides a first flow duct for the thrust fan blades and a secondary flow duct carries flow from the integral secondary flow blades.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: March 11, 2014
    Assignee: The Boeing Company
    Inventors: Mark S. Kuehn, Daniel A. Nyhus, Timothy G. Brewer
  • COANNULAR DUCTED FAN
    Publication number: 20110030336
    Abstract: Secondary air flow is provided for a ducted fan having an engine core driving a fan blisk. The fan blisk incorporates a set of thrust fan blades extending from an outer hub and a set of integral secondary flow blades extending intermediate an inner hub and the outer hub. A nacelle provides a first flow duct for the thrust fan blades and a secondary flow duct carries flow from the integral secondary flow blades.
    Type: Application
    Filed: August 5, 2009
    Publication date: February 10, 2011
    Applicant: THE BOEING COMPANY
    Inventors: Mark S. Kuehn, Daniel A. Nyhus, Timothy G. Brewer