Patents by Inventor James Keppers

James Keppers 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: 10801617
    Abstract: A propel system of an agricultural vehicle has an active pump displacement control system for equalizing or balancing pressure output of hydrostatic pumps of a tandem pump propel arrangement. The active pump displacement control system may include a pressure sensor(s) for determining output pressure of hydrostatic pumps and use the output pressure values within a feedback loop to provide coil input values of coils that control displacement of the hydrostatic pumps so that the pressure outputted by the hydrostatic pumps can be equalized in real-time while on the go during use of the agricultural vehicle.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: October 13, 2020
    Assignee: CNH Industrial America LLC
    Inventors: Aaron Tollefsrud, Daniel Connolly, James Keppers, Peter Meyer
  • Publication number: 20190211924
    Abstract: A propel system of an agricultural vehicle has an active pump displacement control system for equalizing or balancing pressure output of hydrostatic pumps of a tandem pump propel arrangement. The active pump displacement control system may include a pressure sensor(s) for determining output pressure of hydrostatic pumps and use the output pressure values within a feedback loop to provide coil input values of coils that control displacement of the hydrostatic pumps so that the pressure outputted by the hydrostatic pumps can be equalized in real-time while on the go during use of the agricultural vehicle.
    Type: Application
    Filed: January 5, 2018
    Publication date: July 11, 2019
    Inventors: Aaron Tollefsrud, Daniel Connolly, James Keppers, Peter Meyer
  • Patent number: 8560182
    Abstract: An adjustable height implement system for an agricultural vehicle. A harvesting implement has an adjustable height. A control system is operably connected in a first operating mode to the harvesting implement to adjust the height of the harvesting implement with respect to the ground. The control system is operably connected in a second operating mode to the harvesting implement to maintain at least a predetermined distance between the harvesting implement and the ground. The second operating mode is engaged in response to the agricultural vehicle satisfying at least one predetermined vehicle operating parameter.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: October 15, 2013
    Assignee: CNH America LLC
    Inventors: Justin Ringwald, Frank Dupire, James Keppers
  • Publication number: 20100287898
    Abstract: An adjustable height implement system for an agricultural vehicle. The system includes a harvesting implement having an adjustable height, a control system operably connected to the harvesting implement to adjust the height of the harvesting implement with respect to the ground and a sensor configured to determine a ground speed. The control system alters the rate of the height adjustment in response to the ground speed. A method and agricultural vehicle are also disclosed.
    Type: Application
    Filed: January 13, 2010
    Publication date: November 18, 2010
    Applicant: CNH AMERICA, LLC
    Inventors: Justin Ringwald, Frank Dupire, James Keppers
  • Publication number: 20100287900
    Abstract: An adjustable height implement system for an agricultural vehicle. A harvesting implement has an adjustable height. A control system is operably connected in a first operating mode to the harvesting implement to adjust the height of the harvesting implement with respect to the ground. The control system is operably connected in a second operating mode to the harvesting implement to maintain at least a predetermined distance between the harvesting implement and the ground. The second operating mode is engaged in response to the agricultural vehicle satisfying at least one predetermined vehicle operating parameter.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 18, 2010
    Applicant: CNH AMERICA, LLC
    Inventors: Justin RINGWALD, Frank DUPIRE, James KEPPERS
  • Publication number: 20100219264
    Abstract: A suspension arrangement mounted in support of a boom lift assembly and boom supported thereon on a chassis of an agricultural sprayer is provided. The boom lift assembly is configured to move the boom between a raised, inoperative position and a lowered, operative position. The suspension arrangement includes a pivot linkage pivotally coupling the boom lift assembly and the chassis, and a dampener located between the boom lift assembly and the chassis. During operation of the sprayer, the dampener of the suspension arrangement reduces transfer of an impact force or stress force from transferring between the chassis and the boom lift assembly so as to isolate suspension of the boom lift assembly from the chassis of the sprayer.
    Type: Application
    Filed: May 7, 2010
    Publication date: September 2, 2010
    Applicant: CNH AMERICA LLC
    Inventors: Peter R. Meyer, James Keppers
  • Patent number: 7740189
    Abstract: A suspension arrangement mounted in support of a boom lift assembly and boom supported thereon on a chassis of an agricultural sprayer is provided. The boom lift assembly is configured to move the boom between a raised, inoperative position and a lowered, operative position. The suspension arrangement includes a pivot linkage pivotally coupling the boom lift assembly and the chassis, and a dampener located between the boom lift assembly and the chassis. During operation of the sprayer, the dampener of the suspension arrangement reduces transfer of an impact force or stress force from transferring between the chassis and the boom lift assembly so as to isolate suspension of the boom lift assembly from the chassis of the sprayer.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: June 22, 2010
    Assignee: CNH America LLC
    Inventors: Peter R. Meyer, James Keppers
  • Publication number: 20070181710
    Abstract: A suspension arrangement mounted in support of a boom lift assembly and boom supported thereon on a chassis of an agricultural sprayer is provided. The boom lift assembly is configured to move the boom between a raised, inoperative position and a lowered, operative position. The suspension arrangement includes a pivot linkage pivotally coupling the boom lift assembly and the chassis, and a dampener located between the boom lift assembly and the chassis. During operation of the sprayer, the dampener of the suspension arrangement reduces transfer of an impact force or stress force from transferring between the chassis and the boom lift assembly so as to isolate suspension of the boom lift assembly from the chassis of the sprayer.
    Type: Application
    Filed: February 9, 2006
    Publication date: August 9, 2007
    Inventors: Peter Meyer, James Keppers