Patent ID: 7650830

Claim:
A device for a potable fluid dispensing system, said device comprising: a housing fluidly attachable to a pressurized source of potable fluid, said housing defining therein a fluid inlet, at least one fluid outlet and conduit configured to convey a potable fluid from said pressurized source of potable fluid between said inlet and outlet; an ingredient supply cartridge coupled to said housing, wherein said ingredient supply cartridge comprises a substantially rigid outer shell removably attachable to said housing without the need for tools to effect such removable attachment, wherein said ingredient supply cartridge further comprises a bladder disposed in said ingredient supply cartridge, said bladder configured to contain a quantity of an enhancement ingredient therein; and a flow mode selector configured to place said enhancement ingredient disposed in said bladder into selective fluid communication with a first portion of said potable fluid such that during periods when said fluid communication is established between at least a portion of said enhancement ingredient and said first portion of said potable fluid, they mix to form an enhanced potable fluid that is dispensed from said device through said at least one fluid outlet, wherein during said periods of established fluid communication, a second portion of said potable fluid fills a region formed between said bladder and said substantially rigid outer shell to effect a volume reduction of said bladder and consequent displacement of said at least a portion of said enhancement ingredient disposed therein into said first portion of said potable fluid to form said enhanced potable fluid.