ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,557,205, issued on Feb. 17, was assigned to THE ESAB GROUP INC. (North Bethesda, Md.).
"Methods for operating a plasma torch" was invented by Geoffrey H. Putnam (Charlestown, N.H.), Christopher Vincent Braudis Sr. (Canaan, N.H.) and Ryan Lynaugh (Cornish, N.H.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for using a plasma torch includes delivering a plasma gas through a plasma gas flow channel of a plasma torch while ionizing the plasma gas to produce a plasma arc that extends between the electrode and the workpiece. Additionally, shield fluid is delivered through a shield flow channel at a first pressure. A piercing operation to produce a p...