Patents by Inventor David D. Frish

David D. Frish 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: 11713718
    Abstract: A flow metering system includes a pump configured to urge a fluid flow from a fluid source, and a recirculation line located at the pump. A pressure regulating valve is located along the recirculating line. One or more fluid delivery lines extend downstream of the pump to deliver the fluid flow to one or more fluid consumers. A flow control valve is located along each fluid delivery line of the one or more fluid delivery lines. A system controller is operably connected to the pressure regulating valve and the one or more flow control valves. The system controller is configured to maintain a selected delta pressure and a selected flow rate of the fluid flow by operation of the pressure regulating valve and the one or more flow control valves.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: August 1, 2023
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Diego S. Mugurusa, Jesse Joseph Stieber, Jeffrey S. Dearborn, David D. Frish
  • Publication number: 20230101637
    Abstract: A flow metering system includes a pump configured to urge a fluid flow from a fluid source, and a recirculation line located at the pump. A pressure regulating valve is located along the recirculating line. One or more fluid delivery lines extend downstream of the pump to deliver the fluid flow to one or more fluid consumers. A flow control valve is located along each fluid delivery line of the one or more fluid delivery lines. A system controller is operably connected to the pressure regulating valve and the one or more flow control valves. The system controller is configured to maintain a selected delta pressure and a selected flow rate of the fluid flow by operation of the pressure regulating valve and the one or more flow control valves.
    Type: Application
    Filed: September 30, 2021
    Publication date: March 30, 2023
    Inventors: Diego S. Mugurusa, Jesse Joseph Stieber, Jeffrey S. Dearborn, David D. Frish