Patents by Inventor James Harder

James Harder 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).

  • Electric fuel control closed loop aircraft fuel system
    Patent number: 12031492
    Abstract: A fuel control system for an aircraft includes first and second electric motor controlled fuel pumps connect in parallel with one another to a fuel line. A plurality of fuel nozzles are connected to the fuel line to issue pressurized fuel from the fuel line with the ability to throttle flow based on system needs along with the electric pumping. At least one fuel nozzle in the plurality of fuel nozzles includes a respective sensor system. A fuel controller is operatively connected to receive input from the respective sensor system of the at least one fuel nozzle, and operatively connected to control the first and second electric motor controlled pumps based on input from the respective sensor system of the at least one fuel nozzle.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: July 9, 2024
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: James Harder, Andrew W. Solomon
  • Seal with surface indents
    Patent number: 11662026
    Abstract: A seal assembly for preventing the flow of fluid includes a rotating component having a first sealing surface, a stationary component coaxial with the rotating component and having a second sealing surface with the second sealing surface configured to form a seal with the first sealing surface of the rotating component, and indents in one of the first sealing surface and the second sealing surface. The indents are configured to control a width of a gap between the first sealing surface and the second sealing surface to allow fluid to flow into the gap. At least two of the indents are at least partially aligned in the radial direction.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: May 30, 2023
    Assignee: Hamilton Sandstrand Corporation
    Inventors: Weishun William Ni, Edward W. Goy, James Harder
  • ELECTRIC FUEL CONTROL CLOSED LOOP AIRCRAFT FUEL SYSTEM
    Publication number: 20230115336
    Abstract: A fuel control system for an aircraft includes first and second electric motor controlled fuel pumps connect in parallel with one another to a fuel line. A plurality of fuel nozzles are connected to the fuel line to issue pressurized fuel from the fuel line with the ability to throttle flow based on system needs along with the electric pumping. At least one fuel nozzle in the plurality of fuel nozzles includes a respective sensor system. A fuel controller is operatively connected to receive input from the respective sensor system of the at least one fuel nozzle, and operatively connected to control the first and second electric motor controlled pumps based on input from the respective sensor system of the at least one fuel nozzle.
    Type: Application
    Filed: October 12, 2021
    Publication date: April 13, 2023
    Applicant: Hamilton Sundstrand Corporation
    Inventors: James Harder, Andrew W. Solomon
  • SEAL WITH SURFACE INDENTS
    Publication number: 20230048539
    Abstract: A seal assembly for preventing the flow of fluid includes a rotating component having a first sealing surface, a stationary component coaxial with the rotating component and having a second sealing surface with the second sealing surface configured to form a seal with the first sealing surface of the rotating component, and indents in one of the first sealing surface and the second sealing surface. The indents are configured to control a width of a gap between the first sealing surface and the second sealing surface to allow fluid to flow into the gap. At least two of the indents are at least partially aligned in the radial direction.
    Type: Application
    Filed: August 16, 2021
    Publication date: February 16, 2023
    Inventors: Weishun William Ni, Edward W. Goy, James Harder