Patents by Inventor Douglas Hollingshead

Douglas Hollingshead 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: 11499478
    Abstract: An asymmetric inlet particle separator for a gas turbine engine includes an inlet having a first cross-sectional shape, and a duct downstream of the inlet. The duct includes a bend upstream from a splitter, a scavenge branch and an engine airflow branch. The splitter is outside of a line of sight from the inlet and the splitter separates the scavenge branch from the engine airflow branch. The asymmetric inlet particle separator includes an annulus downstream of the engine airflow branch configured to be coupled to the gas turbine engine. The annulus has a second cross-sectional shape, and the engine airflow branch transitions from the first cross-sectional shape to the second cross-sectional shape.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: November 15, 2022
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Zedic Judd, John Pearson, Douglas Hollingshead, Bradley Tucker, Yogendra Sheoran
  • Publication number: 20220275733
    Abstract: An ejector driven scavenge system for a particle separator having a scavenge branch associated with a gas turbine engine includes at least one anti-icing circuit to receive an anti-icing fluid. The at least one anti-icing circuit is to be coupled to the particle separator. The ejector driven scavenge system includes at least one flow ejector bank to be coupled to the scavenge branch and fluidly coupled to the anti-icing fluid to direct the anti-icing fluid through the scavenge branch to drive air with entrained particles and water droplets from the particle separator.
    Type: Application
    Filed: January 21, 2022
    Publication date: September 1, 2022
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Douglas Hollingshead, Jeffrey Guymon, John Pearson, Morris Anderson
  • Publication number: 20220154641
    Abstract: An asymmetric inlet particle separator for a gas turbine engine includes an inlet having a first cross-sectional shape, and a duct downstream of the inlet. The duct includes a bend upstream from a splitter, a scavenge branch and an engine airflow branch. The splitter is outside of a line of sight from the inlet and the splitter separates the scavenge branch from the engine airflow branch. The asymmetric inlet particle separator includes an annulus downstream of the engine airflow branch configured to be coupled to the gas turbine engine. The annulus has a second cross-sectional shape, and the engine airflow branch transitions from the first cross-sectional shape to the second cross-sectional shape.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 19, 2022
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Zedic Judd, John Pearson, Douglas Hollingshead, Bradley Tucker, Yogendra Sheoran