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Valve systems and method for enhanced grading control

  • US 9,670,641 B2
  • Filed: 05/22/2015
  • Issued: 06/06/2017
  • Est. Priority Date: 09/04/2009
  • Status: Active Grant
First Claim
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1. A method of operating a digging machine, comprising:

  • operationally connecting a sensor to a bucket;

    operationally connecting an electronic controller to the sensor and to each respective hydraulic cylinder;

    operationally connecting a valve system to at least one hydraulic cylinder and to the electronic controller;

    inputting a desired post excavation landscape contour into the electronic controller;

    inputting locations of underground objects into the electronic controller;

    automatically actuating a bucket hydraulic cylinder operationally connected to the bucket;

    automatically controlling the bucket hydraulic cylinder to dig within predetermined parameters.

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