Patents by Inventor Royce E. Leaders

Royce E. Leaders 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).

  • 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
  • Patent number: 7635045
    Abstract: A control console for a work machine having at least one work tool has a rest and a plurality of operator control devices. The plurality of operator control devices are adjustable relative to the rest and configured to control at least one function of the at least one work tool.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: December 22, 2009
    Assignee: Caterpillar Inc.
    Inventors: Daniel Edward Shearer, Craig B. Kelley, Royce E. Leaders