Patents by Inventor Michael Lemoyne Repscher

Michael Lemoyne Repscher 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).

  • Articulation system for an earthmoving machine
    Patent number: 10889965
    Abstract: A hydraulic circuit for a pair of cylinders of an articulation system includes a pump, a reservoir, a directional control valve (DCV), a pair of actuator valves (AVs) and an articulation charge circuit (ACC). The DCV is fluidly coupled to the pump, the reservoir and the pair of cylinders via a supply line, a fluid return line and a pair of cylinder supply lines (CSLs) respectively. Each CSL has a load check valve (LCV) therein. The AVs are fluidly coupled with the DCV and the pump via a pilot supply line (PSL) for actuating movement of the DCV. The ACC, associated with the PSL and each cylinder supply line downstream of the associated LCV, charges a corresponding CSL with fluid from the PSL for increasing a pressure in the corresponding CSL when the pressure in the corresponding CSL falls below the pressure of fluid associated with the PSL.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: January 12, 2021
    Assignee: Caterpillar Inc.
    Inventors: Travis Neale Richards, Ernest Everett Stoops, Michael Lemoyne Repscher, Matthew David Roley, Ramalho Stive, Michael Robert Kunde, Dwanz Mwalimu Mwasi, Charles Eric Nail, Bart Jerome Bradford
  • ARTICULATION SYSTEM FOR AN EARTHMOVING MACHINE
    Publication number: 20200392702
    Abstract: A hydraulic circuit for a pair of cylinders of an articulation system includes a pump, a reservoir, a directional control valve (DCV), a pair of actuator valves (AVs) and an articulation charge circuit (ACC). The DCV is fluidly coupled to the pump, the reservoir and the pair of cylinders via a supply line, a fluid return line and a pair of cylinder supply lines (CSLs) respectively. Each CSL has a load check valve (LCV) therein. The AVs are fluidly coupled with the DCV and the pump via a pilot supply line (PSL) for actuating movement of the DCV. The ACC, associated with the PSL and each cylinder supply line downstream of the associated LCV, charges a corresponding CSL with fluid from the PSL for increasing a pressure in the corresponding CSL when the pressure in the corresponding CSL falls below the pressure of fluid associated with the PSL.
    Type: Application
    Filed: June 11, 2019
    Publication date: December 17, 2020
    Applicant: Caterpillar Inc.
    Inventors: Travis Neale Richards, Ernest Everett Stoops, Michael Lemoyne Repscher, Matthew David Roley, Ramalho Stive, Michael Robert Kunde, Dwanz Mwalimu Mwasi, Charles Eric Nail, Bart Jerome Bradford