Patents by Inventor Ryan R. Stoffel

Ryan R. Stoffel 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).

  • Hydraulic system and methods for an earthmoving machine
    Patent number: 11649609
    Abstract: A hydraulic system for a machine includes an implement pump, a valve, and an implement valve subsystem. The implement pump includes a load sensing control, and the valve controls the flow of hydraulic fluid to the implement pump. The implement valve subsystem includes one or more implement control subsystems to control movement of an implement. The valve is an electrohydraulic proportional relief valve and includes a solenoid configured to adjust the pressure of hydraulic fluid delivered to the implement pump proportionally to a current delivered through the solenoid.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: May 16, 2023
    Assignee: Caterpillar Inc.
    Inventors: Patrick W. Sullivan, Jr., Ryan R. Stoffel, Beau D. Kuipers, Andrew N. Schifferer, Royce E. Leaders, Fuaad Sayeed
  • HYDRAULIC SYSTEM AND METHODS FOR AN EARTHMOVING MACHINE
    Publication number: 20220145589
    Abstract: A hydraulic system for a machine includes an implement pump, a valve, and an implement valve subsystem. The implement pump includes a load sensing control, and the valve controls the flow of hydraulic fluid to the implement pump. The implement valve subsystem includes one or more implement control subsystems to control movement of an implement. The valve is an electrohydraulic proportional relief valve and includes a solenoid configured to adjust the pressure of hydraulic fluid delivered to the implement pump proportionally to a current delivered through the solenoid.
    Type: Application
    Filed: November 9, 2020
    Publication date: May 12, 2022
    Applicant: Caterpillar Inc.
    Inventors: Patrick W. Sullivan, JR., Ryan R. Stoffel, Beau D. Kuipers, Andrew N. Schifferer, Royce E. Leaders, Fuaad Sayeed