Patents by Inventor Glen P. Running

Glen P. Running 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 providing down force on a work implement
    Patent number: 6460623
    Abstract: A hydraulic system (20) for controlling the seed/fertilizer supply system (10) and the down pressure on a plurality of individual row units (12). A secondary supply arrangement (60) interconnects a first control circuit (26) of supply system (10) with a second control circuit (28), when the row units (12) are in a float mode, to provide pressurized fluid for the down force on the row units (12) during operation.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: October 8, 2002
    Assignee: Caterpillar Inc.
    Inventors: Michael L. Knussman, Glen P. Running, Arlyn P. Wilcox