ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,383,986, issued on Aug. 12, was assigned to Hitachi Ltd. (Tokyo).
"Welding work measurement system" was invented by Akihide Tanaka (Tokyo), Xudong Zhang (Tokyo), Naoya Okizaki (Tokyo) and Isamu Takahashi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A welding work measurement system enables accurate measurement of a positional relation between respective parts. Therefore, a welding work measurement system includes a photodetection unit that detects light generated by a plurality of markers attached to a torch for welding a welding object or light reflected by the plurality of markers, a marker position acquisition unit that acquires marker posit...