ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,254, issued on Dec. 23.
"Shell-throwing toy long gun" was invented by Chin-Kuei Tsai (Changhua County, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A shell-throwing toy long gun includes a valve assembly that controls whether the high-pressure gas output from an air supply unit can flow to a gun mechanism. The valve assembly includes a valve stem, an air outlet, a sealing rings and collars fitted on the outer side of the valve stem, a sleeve, and a spring. The valve stem can be moved by the impact of a hammer from a striking unit. One end of the air outlet is provided with a first connecting tube, and one end of the sleeve is provided with ...