ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,990, issued on March 25.
"Fastener device" was invented by Yi-Chang Wu (Taoyuan, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fastener device includes a body portion and a second clamping portion. The body portion includes a first clamping portion and a shank portion, where the shank portion is fixed to the first clamping portion, and the second clamping portion includes an engaging member. The engaging member is provided with an opening, and a first protruding structure. The opening allows the shank portion to pass therethrough, and that the first protruding structure is adjacent to the opening. The shank portion includes a rack structu...