ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,409, issued on Sept. 23, was assigned to LINCOLN GLOBAL INC. (Santa Fe Springs, Calif.).

"Weld angle correction device" was invented by Zachary A. Christy (Fort Collins, Colo.) and Levi J. Mitchell (Windsor, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of correcting angles of a welding torch positioned by a user while training a robot of a robotic welding system is provided. Weldment depth data of a weldment and a corresponding weld seam is acquired and 3D point cloud data is generated. 3D plane and intersection data is generated from the 3D point cloud data, representing the weldment and weld seam. User-placed 3D torch position an...