Patents by Inventor James B Min

James B Min 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).

  • Patent number: 8577504
    Abstract: Disclosed is a system for suppressing vibration and noise mitigation in structures such as blades in turbomachinery. The system includes flexible piezoelectric patches which are secured on or imbedded in turbomachinery blades which, in one embodiment, comprises eight (8) fan blades. The system further includes a capacitor plate coupler and a power transfer apparatus, which may both be arranged into one assembly, that respectively transfer data and power. Each of the capacitive plate coupler and power transfer apparatus is configured so that one part is attached to a fixed member while another part is attached to a rotatable member with an air gap therebetween. The system still further includes a processor that has 16 channels, eight of which serve as sensor channels, and the remaining eight, serving as actuation channels. The processor collects and analyzes the sensor signals and, in turn, outputs corrective signals for vibration/noise suppression of the turbine blades.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: November 5, 2013
    Assignee: United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Carlos R. Morrison, Andrew J. Provenza, Benjamin B. Choi, Milind A. Bakhle, James B Min, George L. Stefko, John A Kussmann, Alan J Fougere