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Closed-loop hydraulic system having priority-based sharing

  • US 8,919,114 B2
  • Filed: 10/21/2011
  • Issued: 12/30/2014
  • Est. Priority Date: 10/21/2011
  • Status: Active Grant
First Claim
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1. A hydraulic system, comprising:

  • a first pump;

    a second pump;

    a third pump;

    a first actuator connected to the first pump in closed-loop manner;

    a second actuator connected to the second pump in closed-loop manner;

    a third actuator;

    a selector valve associated with the third pump; and

    a first switching valve associated with the third pump and the third actuator,wherein the first switching valve is movable between a first position at which the third pump is connected to the third actuator in a closed-loop manner to move the third actuator in a first direction, a second position at which the third pump is connected to the third actuator in a closed-loop manner to move the third actuator in a second direction, and a third position at which the third pump is connected to the selector valve.

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