ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,033, issued on Nov. 25, was assigned to MAKINO MILLING MACHINE Co. LTD. (Tokyo).
"Tool holder and machining method" was invented by Junichi Maeda (Kanagawa, Japan) and Takaaki Sugasaki (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tool holder (100) comprising: an outside section (10) connected and fixed to a main shaft housing; a rotation input section (20) that is gripped by the main shaft and caused to rotate at a first rotation speed r1; a rotation output section (40) that has the rotational force from the rotation input section (20) transmitted thereto and rotates at a second rotation speed r2 that is different from the first...