Patents by Inventor Aaron Darnell

Aaron Darnell 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).

  • Control system for actuating lifting function
    Patent number: 12188493
    Abstract: A hydraulic control system for linear actuation that provides a bypass flow during startup of a lifting command, provides a split flow between a cylinder and a reservoir once a minimum operating speed of a pump has been reached, and provides complete flow to a cylinder after the minimum operating speed of the pump has been reached. This is achieved through control of a flow control valve and a proportional flow control valve by a processor.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: January 7, 2025
    Assignee: Danfoss Power Solutions Inc.
    Inventors: Aaron Darnell, Zhekang Du, Simon Nielsen
  • Hydraulic control system for linear actuation
    Patent number: 12188467
    Abstract: A hydraulic control system for linear actuation that includes an electric motor connected to a hydraulic pump and a hydraulic cylinder connected to the pump by a first flow line. A pressure transducer, a pressure control valve, and a check valve are connected to the first flow line between the pump and the cylinder and a tank is connected to the pump by a second flow line and the cylinder by a return line. A control valve is connected between the first flow line and the return line.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: January 7, 2025
    Assignee: DANFOSS POWER SOLUTIONS INC.
    Inventors: Aaron Darnell, Zhekang Du, Simon Nielsen
  • HYDRAULIC CONTROL SYSTEM FOR LINEAR ACTUATION
    Publication number: 20230213031
    Abstract: A hydraulic control system for linear actuation that includes an electric motor connected to a hydraulic pump and a hydraulic cylinder connected to the pump by a first flow line. A pressure transducer, a pressure control valve, and a check valve are connected to the first flow line between the pump and the cylinder and a tank is connected to the pump by a second flow line and the cylinder by a return line. A control valve is connected between the first flow line and the return line.
    Type: Application
    Filed: June 9, 2021
    Publication date: July 6, 2023
    Inventors: Aaron Darnell, Zhekang Du, Simon Nielsen
  • CONTROL SYSTEM FOR ACTUATING LIFTING FUNCTION
    Publication number: 20230175531
    Abstract: A hydraulic control system for linear actuation that provides a bypass flow during startup of a lifting command, provides a split flow between a cylinder and a reservoir once a minimum operating speed of a pump has been reached, and provides complete flow to a cylinder after the minimum operating speed of the pump has been reached. This is achieved through control of a flow control valve and a proportional flow control valve by a processor.
    Type: Application
    Filed: May 27, 2021
    Publication date: June 8, 2023
    Inventors: Aaron Darnell, Zhekang Du, Simon Nielsen