ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,954, issued on Sept. 8, was assigned to ArcelorMittal (Luxembourg).
"Leveller calibration device" was invented by Mounir Amourak (Metz, France), Olivier Madelaine-Dupuich (Metz, France), Jean-Marc Hemmen (Verny, France), Pierre Gauje (Klang, France) and Florent Sponem (Vigy, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A calibrating bar, for calibrating a multi-roll leveller for metal strips, the calibrating including a first groove on a first face wherein a first optical fibre is embedded by an adhesive, a second groove on a second face, being opposite to the first face, wherein a second optical fibre is embedded by means of an adhesive, t...