US Patent Issued to CITIZEN WATCH, CITIZEN MACHINERY on June 24 for "Machining device, machining method and cutting tool" (Japanese Inventors)

ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,402, issued on June 24, was assigned to CITIZEN WATCH Co. LTD. (Tokyo) and CITIZEN MACHINERY Co. LTD. (Nagano, Japan).

"Machining device, machining method and cutting tool" was invented by Kazuhiko Sannomiya (Kitasaku-gun, Japan) and Shinichi Mutou (Kitasaku-gun, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A machining device threads a workpiece by relatively rotating the workpiece and a multi-blade tool and relatively moving them along a feed direction to perform cutting processes in the radial direction of the workpiece along the same cutting path in a predetermined spiral form. A controller performs a groove machining to form a threaded p...