Patents by Inventor Randall D. Pruitt

Randall D. Pruitt 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: 10385547
    Abstract: A machine includes a frame supported on at least a first axle and a second axle and a work implement that is hydraulically powered to be displaced with respect to the frame. A powertrain disposed on the machine generates a first force for propelling the machine with respect to the ground. The machine can include an electronic controller that communicates with the powertrain and a hydraulic sensor on the hydraulic actuator. The controller is configured to determine the weight distribution directed through the front and rear axles of the machine based in part on the dynamic positioning of the work implement.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: August 20, 2019
    Assignee: Caterpillar Inc.
    Inventors: Jeffrey K. Berry, Qi Li, Dinny Jacob, Randall D. Pruitt
  • Publication number: 20180179739
    Abstract: A machine includes a frame supported on at least a first axle and a second axle and a work implement that is hydraulically powered to be displaced with respect to the frame. A powertrain disposed on the machine generates a first force for propelling the machine with respect to the ground. The machine can include an electronic controller that communicates with the powertrain and a hydraulic sensor on the hydraulic actuator. The controller is configured to determine the weight distribution directed through the front and rear axles of the machine based in part on the dynamic positioning of the work implement.
    Type: Application
    Filed: July 6, 2017
    Publication date: June 28, 2018
    Applicant: Caterpillar Inc.
    Inventors: Jeffrey K. Berry, Qi Li, Dinny Jacob, Randall D. Pruitt
  • Patent number: 7798272
    Abstract: A system for controlling slip of vehicle drive members is disclosed. The system includes a power train including a plurality of drive members and a hydraulic transmission configured to supply torque to at least one of the drive members. A magnitude of the torque is related to fluid flow in the hydraulic transmission. The system further includes a controller configured to control the fluid flow in the hydraulic transmission. The controller is configured to receive a signal indicative of a steering command and a signal indicative of a parameter related to pressure in the hydraulic transmission. The controller is further configured to control slip of the at least one drive member based on the signal indicative of a steering command and the signal indicative of a parameter related to pressure.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: September 21, 2010
    Assignee: Caterpillar Inc
    Inventors: Randall D. Pruitt, Igor Strashny
  • Publication number: 20080128189
    Abstract: A system for controlling slip of vehicle drive members is disclosed. The system includes a power train including a plurality of drive members and a hydraulic transmission configured to supply torque to at least one of the drive members. A magnitude of the torque is related to fluid flow in the hydraulic transmission. The system further includes a controller configured to control the fluid flow in the hydraulic transmission. The controller is configured to receive a signal indicative of a steering command and a signal indicative of a parameter related to pressure in the hydraulic transmission. The controller is further configured to control slip of the at least one drive member based on the signal indicative of a steering command and the signal indicative of a parameter related to pressure.
    Type: Application
    Filed: November 30, 2006
    Publication date: June 5, 2008
    Inventors: Randall D. Pruitt, Igor Strashny