Patents by Inventor Karen B. Kontos

Karen B. Kontos 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).

  • Nonlinearly stacked low noise turbofan stator
    Patent number: 7547186
    Abstract: A nonlinearly stacked low noise turbofan stator vane having a characteristic curve that is characterized by a nonlinear sweep and a nonlinear lean is provided. The stator is in an axial fan or compressor turbomachinery stage that is comprised of a collection of vanes whose highly three-dimensional shape is selected to reduce rotor-stator and rotor-strut interaction noise while maintaining the aerodynamic and mechanical performance of the vane.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: June 16, 2009
    Assignee: Honeywell International Inc.
    Inventors: William B. Schuster, Karen B. Kontos, Donald S. Weir, Nick A. Nolcheff, John A. Gunaraj
  • Active acoustic liner
    Patent number: 5498127
    Abstract: An active liner for attenuating noise includes a rigid backplate supporting a piezoelectric panel. A pressure transducer is disposed in the panel for sensing acoustic pressure of noise being propagated against a face surface of the panel. A controller includes a predetermined schedule of acoustic impedance for controlling a displacement driver joined to the panel to effect a displacement velocity of the panel face surface for obtaining a predetermined acoustic impedance at the sensed acoustic pressure for attenuating noise.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: March 12, 1996
    Assignee: General Electric Company
    Inventors: Robert E. Kraft, Karen B. Kontos