ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,690, issued on April 8, was assigned to Parker-Hannifin Corp. (Cleveland).
"Negative space fuel tank gauging system and ullage gas control" was invented by Bryan Jensen (Buckeye, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fuel gauging system for a fuel tank containing fuel and an ullage gas in an ullage of the tank. The fuel gauging system pressurizes/depressurizes the ullage gas and measures changes in conditions of the ullage gas to determine ullage gas volume and thus volume of the fuel. The system may infer one or more values in the volume calculation to reduce the number of measurements involved. The inferred values may come from kn...