ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,851, issued on June 24.
"Automatic positioning bolt" was invented by Wenjie Xia (Suizhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An automatic positioning bolt, includes a bolt body, a mounting hole penetrated through the bolt body, a compression spring provided inside the mounting hole, an insert rod provided below the compression spring, an insert hole provided inside the insert rod, a positioning rod provided inside the insert hole, and a magnet rod arranged at the lower end of the insert rod. The bolt can ensure a firm connection between the object and the iron plate, prevent the object from moving when subjected to force, and enabl...