Patent ID: 8109448

Claim:
A system for dispensing controlled amounts of an additive mixed with a carrier, comprising: one or more dispensing and mixing nozzles, each nozzle including a Venturi and an induction port in communication with the Venturi; a carrier fluid supply connected to each nozzle comprising a carrier fluid reservoir for holding the carrier fluid, a carrier fluid supply circuit, a first pump, a first metering and control valve, a first flow meter, a first pressure transducer, and a carrier fluid distribution manifold, arranged in series, the carrier fluid distribution manifold being connected to each nozzle; and an additive fluid supply comprising an additive fluid reservoir for holding the additive fluid and an additive fluid supply circuit having a second metering and control valve, a second flow meter, a second pressure transducer, and an additive fluid distribution manifold, arranged in series, the additive fluid distribution manifold being connected to the induction port of each nozzle; wherein carrier fluid flow through the Venturi in the nozzle causes additive fluid to be drawn into the nozzle and mixed with the carrier fluid prior to exiting the nozzle.