ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,653, issued on March 25, was assigned to SERIMAX HOLDINGS (Roissy en France, France).
"Internal clamping and welding device" was invented by Guy Bellanger (Boulogne-Billancourt, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "An internal clamping and welding device for joining tubes by their distal ends, the device comprising movement means in order to be moved inside the tubes, separate clamping means for cooperating with the inner surfaces of the tubes to be welded, and a welding head mounted so as to be able to both rotate about a longitudinal axis of the tubes, and also pivot in order to be tiltable relative to a support of the clamping m...