ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,637, issued on March 25, was assigned to KENNAMETAL INC. (Latrobe, Pa.).
"Rotary cutting tool with tunable vibration absorber" was invented by Ruy Frota de Souza Filho (Latrobe, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary cutting tool includes a tool body including a shank portion and a cutting portion adjoining the shank portion. The cutting portion has a plurality of blades separated by helically twisted flutes. A tunable vibration absorber is disposed within an internal cavity formed in the cutting portion and has a shape that follows the helically twisted flutes. The tunable vibration absorber includes an absorber mass and a res...