ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,403,488, issued on Sept. 2, was assigned to Spraying Systems Co. (Wheaton, Ill.).

"Liquid dispensing system with pressurized air operated liquid control pistons" was invented by Thomas L. Coplin (Lake in the Hill, Ill.) and Edward Camic (Wheaton, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A modular liquid distribution system in which each module has a module body, a spray nozzle, and a piston for controlling the dispensing of liquid from the nozzle. Each module has a pneumatically operated system for moving the piston to an open position while facilitating quicker return movement to a closed position, enabling the dispensing of precisely contro...