ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,772, issued on March 18.
"Method for solid state welding" was invented by Paul Po Cheng (London, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of securing an insert in a preselected region of a workpiece. An opening wall is formed in the workpiece with an opening wall surface defining an opening to produce a remainder segment of the workpiece. The opening encompasses or coincides with the preselected region. An insert is provided to fit in the opening. An insert heated portion and a remainder segment heated portion are heated to a hot working temperature, at which they are plastically deformable. While the insert is subjected to an...