Patent ID: 6168824
Filing Date: 2001-01-02
Classification: B05B,G01N,Y10T

Abstract:
A method of regulating the viscosity of a liquid paint in an automotive vehicle paint application system comprising: pumping the paint into the paint application system at a first pressure; continuously monitoring the first pressure that the paint is pumped into the paint application system; returning the paint which is not applied to a vehicle body by the paint application system through a return line; continuously monitoring the return pressure of the liquid paint flowing through the return line; continuously measuring the flow rate of the liquid paint returning through the return line; calculating the viscosity from the pressure differential from the first pressure and the return pressure and the fluid flow rate of the paint in the return line of the paint application system and a constant representative of the fluid resistance of the paint application system; delivering the paint to a pressure sump from said return line; and selectively adding thinners to the liquid paint to cause the paint to maintain a predetermined level of viscosity.