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Dishwasher

  • US 10,238,266 B2
  • Filed: 02/17/2017
  • Issued: 03/26/2019
  • Est. Priority Date: 06/17/2003
  • Status: Expired due to Term
First Claim
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1. A dishwasher comprising:

  • a tub at least partially defining a wash chamber;

    a lower dish rack located within the wash chamber;

    an upper dish rack located within the wash chamber above the lower dish rack;

    a lower rotating spray arm located within the wash chamber beneath the lower dish rack and configured to direct a spray of liquid into the wash chamber to define a first wash zone;

    an upper rotating spray arm located within the wash chamber beneath the upper dish rack;

    at least one nozzle having at least one aperture located in the wash chamber beneath the lower rotating spray arm and configured to direct a spray of liquid into the wash chamber to define a second wash zone which is more concentrated than the first wash zone;

    a pump assembly in fluid communication with the tub to draw in liquid from the tub and comprising a pump output for outputting the drawn-in liquid; and

    a diverter valve fluidly coupling the pump to the lower rotating spray arm, upper rotating spray arm, and at least one nozzle, and selectively fluidly coupling the pump output to at least one of the lower rotating spray arm, the upper rotating spray arm, or the at least one nozzle.

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