Patent ID: 8224481

Claim:
A handheld fluid dispensing system comprising: a first and second fluid reservoir configured to contain a first and second constituent, respectively; a first and second pump, said first and second pump in communication with said first and second fluid reservoir, respectively; a drive motor, said first and second pump commonly driven by said drive motor; a control system, said control system coupled to said drive motor; a first and second valve assembly, said first and second valve assembly in communication with said first and second pump, respectively, each of said first and second valve assemblies including a valve chamber in communication with an inlet port via an inlet channel, an outlet port via an outlet channel, and a recirculation port via a recirculation channel; a first and second moving valve member disposed in said first and second valve chamber, respectively, and responsive to said control system for directing a constituent between said inlet channel and one of said outlet and recirculation channels, wherein said control system selectively actuates said first and second moving valve members for dispensing a composition containing desired proportions of said first and second constituents; and a handheld enclosure, wherein said first and second fluid reservoirs, said first and second pumps, said drive motor, said control system, said first and second valve assemblies and said first and second moving valve members are supportably received within said handheld enclosure.