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Integrated implement downforce control systems, methods, and apparatus

  • US 9,879,702 B2
  • Filed: 07/25/2013
  • Issued: 01/30/2018
  • Est. Priority Date: 07/25/2012
  • Status: Active Grant
First Claim
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1. A downforce controller for an agricultural implement, comprising:

  • a double-acting hydraulic cylinder including a first chamber and a second chamber, said cylinder configured to be coupled to an agricultural row unit and an agricultural toolbar for transmitting a net downforce between said agricultural toolbar and said agricultural row unit, a first pressure in said first chamber and a second pressure in said second chamber having counteracting effects on said net downforce;

    a manifold coupled to said cylinder, said manifold being in fluid communication with said first chamber; and

    a pressure control valve supported by said manifold, said pressure control valve being in fluid communication with said manifold and with said first chamber;

    wherein said pressure control valve comprises a supply port, a return port, and a control port, and wherein said pressure control valve is configured to establish a desired pressure at said control port; and

    wherein said pressure control valve is supported by said manifold.

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