Patent ID: 6880727

Claim:
Method of mixing and delivering a predetermined liquid mixture according to a predetermined recipe, wherein a plurality of liquid component reservoirs each have a liquid component inlet port, a gas pressure inlet port and a regulator for maintaining the same gas pressure within each of the reservoirs, and an outlet port coupled to a reservoir outlet valve for outletting a precise amount of selected liquid component from respective reservoirs, which method comprises: filling the plurality of liquid component reservoirs with selected liquid components; maintaining the same gas pressure within each reservoir; repetitively sequencing actuation of said reservoir outlet valves to discharge precise doses of said selected liquid components from the plurality of reservoirs during each valve actuation period into a liquid mixer and continuing said repetitive sequencing of the valve openings until the liquid mixture recipe is complete; mixing said doses of said selected liquid components to form the predetermined liquid mixture proximate a point of use of said mixture; and delivering the predetermined liquid mixture to the point of use.