Patents by Inventor Andrew Frink

Andrew Frink 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).

  • Active stall prevention in centrifugal fans
    Patent number: 10527047
    Abstract: A system, method, and computer program to adjust the effective width of centrifugal fan wheel(s) in a fan system during operation. The reason for the adjustment is to prevent stall when running the fan over a wider range of system operating points. This is of particular use in high turndown variable air volume systems commonly encountered in HVAC systems. An additional option function is to isolate a single fan, in a fan system, if that fan should fail, to prevent reverse flow through the failed fan.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: January 7, 2020
    Inventors: Frederick Q. Kamps, Andrew Frink
  • Planar near-field calibration of digital arrays using element plane wave spectra
    Patent number: 10109915
    Abstract: A calibration method, applicable to element-level digital arrays operating in the receive mode, which utilizes the individual element plane wave spectra obtained from a single planar near-field scan. The method generates highly accurate near-field measurement derived amplitude and phase calibration of both large and small digital arrays as a function of array scan. The present disclosure provides digital array calibration methods and their potential uses in satellites and directional arrays.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: October 23, 2018
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Andrew Frink, George Whitaker, Jeffrey Maas, Kenneth W. O'Haver
  • ACTIVE STALL PREVENTION IN CENTRIFUGAL FANS
    Publication number: 20180209431
    Abstract: A system, method, and computer program to adjust the effective width of centrifugal fan wheel(s) in a fan system during operation. The reason for the adjustment is to prevent stall when running the fan over a wider range of system operating points. This is of particular use in high turndown variable air volume systems commonly encountered in HVAC systems. An additional option function is to isolate a single fan, in a fan system, if that fan should fail, to prevent reverse flow through the failed fan.
    Type: Application
    Filed: December 21, 2017
    Publication date: July 26, 2018
    Inventors: Frederick Q. Kamps, Andrew Frink
  • PLANAR NEAR-FIELD CALIBRATION OF DIGITAL ARRAYS USING ELEMENT PLANE WAVE SPECTRA
    Publication number: 20150349419
    Abstract: A calibration method, applicable to element-level digital arrays operating in the receive mode, which utilizes the individual element plane wave spectra obtained from a single planar near-field scan. The method generates highly accurate near-field measurement derived amplitude and phase calibration of both large and small digital arrays as a function of array scan. The present disclosure provides digital array calibration methods and their potential uses in satellites and directional arrays.
    Type: Application
    Filed: February 13, 2015
    Publication date: December 3, 2015
    Inventors: Andrew Frink, George Whitaker, Jeffrey Maas, Kenneth W. O'Haver