ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,900, issued on June 24.
"Ceramic control valve" was invented by Hsiang-Shih Wang (Changhua, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A ceramic control valve may include a shell, a valve stem, a driving valve piece, a fixed valve piece, and a buffer member. The shell has an axial hole at the center portion thereof, and the axial hole comprises a first hole portion and a second hole portion. The lower end of the axial hole has an engaging periphery protruding from the inner periphery of the axial hole, and the first hole portion has at least a water outlet laterally penetrating through the shell. The valve stem comprises a driving end, an...