ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,893, issued on March 3, was assigned to Agie Charmilles SA (Losone, Switzerland).
"Method for electrical discharge machining" was invented by Livio Mazzolini (Ponte Capriasca, Switzerland), Marco Boccadoro (Verscio, Switzerland) and Rino D'Amario (Sigirino, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method and device for electrical Wire electrical discharge machining method (WEDM) for forming a desired pattern on a workpiece by a WEDM machine tool, in which a preliminary voltage pulse is applied to a gap between a wire electrode and a workpiece, and in which, at the breakdown of said preliminary voltage pul...