Patent ID: 7695185

Claim:
An apparatus for producing an aqueous paint composition, comprising: a first paint component supply reservoir; a second paint component supply reservoir; a measuring system which determines a first amount of a first premixed aqueous paint component supplied from the first paint component supply reservoir, and a second amount of a second premixed aqueous paint component supplied from the second paint component supply reservoir; a receiving reservoir, wherein the aqueous paint composition is formed in response to the receiving reservoir receiving the first and second premixed aqueous paint components; a user interface for a user to input a desired amount of the desired aqueous paint composition; and a controller which tracks available amount of the first and second premixed aqueous paint components by subtracting the amounts of the first and second premixed aqueous paint components in the first and second supply reservoirs as they are supplied to the receiving reservoir and wherein the controller determines whether availability of the first and second premixed aqueous paint components in the first and second supply reservoirs is sufficient for the desired amount of the desired aqueous paint composition by subtracting the amount of the first and second premixed aqueous paint components for the desired amount of the desired aqueous paint composition to be produced from the amount in the first and second supply reservoirs and if the amount is less than zero after the subtraction, then the availability is insufficient and the controller provides a signal to the first and second supply reservoirs not to supply the first and second premixed aqueous paint components.