ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,246, issued on May 20, was assigned to JFE Steel Corp. (Tokyo).
"Needle-peening method" was invented by Tsuyoshi Shiozaki (Tokyo) and Naoki Yamaguchi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A needle-peening method of peening a weld toe of a welded joint for welding and joining two pieces of sheet metal using a peening pin includes vibrating one or a plurality of the peening pins in a center axis direction; rotating the one peening pin about a single rotation axis parallel to the center axis while the center axis of the one peening pin is offset from the rotation axis, when using the one peening pin; rotating the plurality of the peenin...