ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,326, issued on June 30, was assigned to NIPPON STEEL Corp. (Tokyo).
"Thread shape dimension measuring device and thread shape dimension measuring method" was invented by Shinichi Oshima (Chiyoda-ku, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "This thread shape dimension measuring device includes an illumination unit, an imaging unit, a focal distance adjustment unit, a calibration value setting unit, and a control unit. The illumination unit selectively emits parallel light in two directions. The imaging unit selectively performs capturing of a first captured image and a second captured image. The focal distance adjustment unit adjusts a fo...