Patent ID: 6092693
Filing Date: 2000-07-25
Classification: B67D

Abstract:
A device for dispensing a first liquid and a second liquid in a desired ratio, comprising:a first conduit for delivery of the first liquid;a second conduit for delivery of the second liquid;a mixing chamber in communication with each of said first and second conduits for receiving the first and second liquids;a first valve associated with said first conduit for controlling a first rate of fluid flow through said first conduit;a second valve associated with said second conduit for controlling a second rate of fluid flow through said second conduit;at least one flow meter operably associated with said first and second conduits for measuring said fluid flow through said conduits; anda control system responsive to said flow meter and operably associated with said valves for controlling, in an open loop fashion, said valves such that said fluid flow through said conduit is controlled in a manner such that the flow of said fluid through said conduit is modified when it differs from the flow through the other one of said conduits by a predetermined amount, whereby a predetermined flow ratio of the first liquid to the second liquid is maintained.