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Water-driven dispensing systems employing concentrated product

  • US 8,851,335 B2
  • Filed: 04/17/2012
  • Issued: 10/07/2014
  • Est. Priority Date: 04/17/2012
  • Status: Active Grant
First Claim
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1. A refill unit for a product dispenser, the refill unit comprising:

  • a supply of concentrated product;

    a dilution chamber having an inlet for said concentrated product and an inlet for water;

    a product pump mechanism including;

    a product chamber that fluidly communicates with said supply of concentrated product and fluidly communicates with said dilution chamber, said product chamber structured to decrease in volume upon actuation of said product pump mechanism to thereby drive a dose of product from said product chamber toward said dilution chamber, said product chamber further structured to increase in volume after actuation of said product pump mechanism to thereby draw a dose of product from said supply of concentrated product into said product chamber, wherein said supply of concentrated product, said dilution chamber, said product pump and said product chamber form an entire unit suitable for removal and replacement as a unit from a product dispenser.

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