ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,956, issued on July 15, was assigned to Franklin Fueling Systems LLC (Madison, Wis.).
"Car wash additive monitoring" was invented by Randall Boucher (Saco, Maine), Vitaliy Demin (Saco, Maine) and Danny Norton (Saco, Maine).
According to the abstract* released by the U.S. Patent & Trademark Office: "A car wash additive measuring system and method use a bubbler which provides a flow of pressurized gas through each bulk container. A pressure of each individual flow of pressurized gas is measured by a pressure transducer to output a signal indicative of the level of additive stored in the container. Flow rates of the respective flow of pressurized gas may be adjusted to accommodate p...