ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,196, issued on Dec. 16.
"Water gun" was invented by Jiansheng She (Shantou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A water gun is provided. On the water gun, when a liquid pump is turned on, liquid in a liquid storage device is injected into a first water tank through a water inlet hole. The liquid pump is used as a unique power source to synchronously perform two functions: In a first function, the liquid in the first water tank is extracted through the water outlet hole for being pressurized, thus forming a high-pressure jet water flow. In a second function, a dynamic pressure field is built inside the first water tank to force a par...