ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,144, issued on June 30.
"Threaded fastener" was invented by Yu-Min Chen (Kaohsiung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fastener includes a bolt including a head and a threaded shank including a bare section proximate the head, an end section having a wider end and having a plurality of alternate grooves and ridges, an intermediate section proximate the end section and having a spiral trough, and a threaded section between the intermediate section and the bare section; and a hollow member including a head member and a malleable shank having a plurality of holes. The end section is tapered toward the intermediate section at an ang...