ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,697,666, issued on Aug. 4, was assigned to KENNAMETAL INC. (Latrobe, Pa.).
"Cutting tool" was invented by Christian Strauchmann (Eggolsheim, Germany), Jurgen Schwagerl (Vohenstrauss, Germany) and Herbert Rudolf Kauper (Erlangen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Cutting tool for the rotary machining of workpieces, in particular a twist drill, with a cutting tip which has at least one main cutting edge and at least one free surface, wherein a flank face adjoins the main cutting edge radially to the outside, and wherein a flank angle of the flank face increases in a radially outward direction."
The patent was filed on Nov. 8, 2023, un...