Patents by Inventor Jeffrey William Dobchuk

Jeffrey William Dobchuk 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).

  • Electro-hydraulic sensor fail safe
    Patent number: 8646473
    Abstract: A fail-safe system and method for an electro-hydraulic system. The system includes a controller, sensor, directional control valve, interlock, hydraulic valve and movement actuator. The directional control valve moves when the controller is moved. The interlock is hydraulically coupled to the directional control valve; and is in active position when the directional control valve is moved, and in shutoff position when the directional control valve is not moved. The hydraulic valve has an input side coupled to a flow source and an output side coupled to a hydraulic function. The movement actuator moves the hydraulic valve to a desired position as directed by the controller when the interlock is in the active position, and does not move the hydraulic valve when the interlock is in the shutoff position. The sensor detects movement of the controller and sends a control signal to the first valve actuator.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: February 11, 2014
    Assignee: Deere & Company
    Inventors: Derek Scott Hall, Joshua Dean Graeve, Brian K. Kellogg, Eric Richard Anderson, Jeffrey William Dobchuk
  • ELECTRO-HYDRAULIC SENSOR FAIL SAFE
    Publication number: 20120216877
    Abstract: A fail-safe system and method for an electro-hydraulic system. The system includes a controller, sensor, directional control valve, interlock, hydraulic valve and movement actuator. The directional control valve moves when the controller is moved. The interlock is hydraulically coupled to the directional control valve; and is in active position when the directional control valve is moved, and in shutoff position when the directional control valve is not moved. The hydraulic valve has an input side coupled to a flow source and an output side coupled to a hydraulic function. The movement actuator moves the hydraulic valve to a desired position as directed by the controller when the interlock is in the active position, and does not move the hydraulic valve when the interlock is in the shutoff position. The sensor detects movement of the controller and sends a control signal to the first valve actuator.
    Type: Application
    Filed: February 28, 2011
    Publication date: August 30, 2012
    Inventors: Derek Scott Hall, Joshua Dean Graeve, Brian K. Kellogg, Eric Richard Anderson, Jeffrey William Dobchuk