Patents by Inventor James Draffkorn

James Draffkorn 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 BALANCING CONTROL VALVE AND RIDE CONTROL SYSTEM INCORPORATNG SAME
    Publication number: 20220082171
    Abstract: A balancing valve includes four ports. While the pressures at a pair of balancing ports of a hydraulic balancing valve are equal, the valve maintains two other ports in a closed position. Upon a pressure differential between the balancing ports, fluid communication can occur between one of the balancing ports and either of the other ports based upon the direction of the pressure differential. A hydraulic ride control system utilizes the balancing valve together with other control valves to provide ride control functionality.
    Type: Application
    Filed: November 29, 2021
    Publication date: March 17, 2022
    Applicant: HydraForce, Inc.
    Inventors: Travis Schmidt, James Draffkorn, Barry German
  • Hydraulic balancing control valve and ride control system incorporating same
    Patent number: 11187330
    Abstract: A balancing valve includes four ports. While the pressures at a pair of balancing ports of a hydraulic balancing valve are equal, the valve maintains two other ports in a closed position. Upon a pressure differential between the balancing ports, fluid communication can occur between one of the balancing ports and either of the other ports based upon the direction of the pressure differential. A hydraulic ride control system utilizes the balancing valve together with other control valves to provide ride control functionality.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: November 30, 2021
    Assignee: HydraForce, Inc.
    Inventors: Travis Schmidt, James Draffkorn, Barry German
  • HYDRAULIC BALANCING CONTROL VALVE AND RIDE CONTROL SYSTEM INCORPORATNG SAME
    Publication number: 20190316692
    Abstract: A balancing valve includes four ports. While the pressures at a pair of balancing ports of a hydraulic balancing valve are equal, the valve maintains two other ports in a closed position. Upon a pressure differential between the balancing ports, fluid communication can occur between one of the balancing ports and either of the other ports based upon the direction of the pressure differential. A hydraulic ride control system utilizes the balancing valve together with other control valves to provide ride control functionality.
    Type: Application
    Filed: April 17, 2019
    Publication date: October 17, 2019
    Applicant: HydraForce, Inc.
    Inventors: Travis Schmidt, James Draffkorn, Barry German