ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,187, issued on Oct. 14.
"Truss structure member having assembly hole and structure using same" was invented by Byung Sue Ryu (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a truss structure member having an assembly hole with a tapered extension portion and a structure using same, and provides a truss structure member and a structure, the truss structure member being capable of enabling a truss structure member and a truss structure member or a truss structure member and a connection member to be firmly fastened to each other without clearance even when a gap is generated between a fastening tool ...