ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,096, issued on July 21.
"Sharpener" was invented by Tirui Xie (Chongqing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sharpener is provided. The sharpener includes a clamping component, a sharpening seat, a sharpener holder, an arm body, a bearing ring, and a driving component, the clamping component is provided with a first rotating axis and a pair of mirrored clamping arms; one end of the arm body is sleeved on a horizontal rod, and the other end thereof is fixed to the first rotating axis; the bearing ring is sleeved on the arm body, a connecting ear is provided on an outer circumference of the bearing ring. When the driving component ...