ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,795, issued on March 18, was assigned to Gong Fong Enterprise Co. Ltd. (Tainan, Taiwan).
"Ratchet wrench" was invented by Che-I Hu (Tainan, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A ratchet wrench comprises a grip, having a first opening, a second opening and an accommodation space, an adjustment structure being connected to the first opening, the adjustment structure including a positioning seat and a positioning member, the positioning seat having a positioning hole; a rod member, slidably disposed in the positioning hole, the rod member including a polygonal rod section and a cylindrical rod section, a through hole being defined in...