Patent ID: 9301653
Filing Date: 2016-04-05
CPC Classification: A47K

Claim Text:
1. A refill unit for a product dispenser, the refill unit comprising: a housing; a supply of concentrated product located within the housing; a dilution chamber located within the housing and having a concentrate inlet for said concentrated product and water inlet for water; a product pump mechanism at least partially located within the housing and 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 the concentrated product at least partially surrounds at least one of the dilution chamber and the product pump.