ALEXANDRIA, Va., April 9 -- United States Patent no. 12,269,120, issued on April 8, was assigned to TRUMPF (CHINA) Co. LTD. (Taicang, China).
"Gas assistance device for laser welding and laser welding system" was invented by Yuan Liu (Suzhou, China), Zekai Hou (Suzhou, China) and Franz Lehleuter (Suzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas assistance device for laser welding includes an assistance gas unit configured to apply an assistance gas to a site to be welded, and a fume suction unit configured to suck fumes generated during laser welding. The assistance gas unit is provided with an assistance gas nozzle. The fume suction unit is provided with a fume suction port. The assistance...