ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,362, issued on June 24.
"Oil tank cleaning device" was invented by Shih-Yuan Ke (Hsin-gang Shiang, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An oil tank cleaning device is used to solve the problem of poor effect of conventional cleaning operation of an oil tank. The oil tank cleaning device includes a separation equipment, a temporary storage tank, a collecting tank, a pipeline unit, and a plurality of control valves. A first pump sucks air out of the temporary storage tank, such that the temporary storage tank is in a negative pressure state. The collecting tank receives a fluid outputted from the temporary storage tank. The pipeline u...