Patent ID: 8608025
Filing Date: 2013-12-17
Classification: B05B,B05C

Abstract:
1. An apparatus for controlling the dispensing of a liquid from a barrel including an interior chamber for holding the liquid, a discharge outlet communicating with the interior chamber for discharging the liquid, and an air space for receiving pressurized air for forcing the liquid from the interior chamber through the discharge outlet, the apparatus comprising: an air supply solenoid valve and an air exhaust solenoid valve adapted to be operatively coupled with the barrel, the air supply solenoid valve operative to control the flow of pressurized air to the air space, and the air exhaust solenoid valve operative to control the flow of air from the air space to atmosphere; and a control that selectively activates the air supply solenoid valve and the air exhaust solenoid valve to (i) move the air supply solenoid valve to an open position to supply pressurized air to the air space, (ii) move the air supply solenoid valve to a closed position while maintaining the air exhaust solenoid valve in a closed position to isolate the air space from atmosphere after the air space is pressurized in order to dispense desired amounts of the liquid from the discharge outlet, and (iii) move the air exhaust solenoid valve to an open position to decrease pressurization in the air space and thereby stop liquid dispensing.