US Patent Issued to Proterial on Sept. 1 for "Position detection device" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,700, issued on Sept. 1, was assigned to Proterial Ltd. (Tokyo).

"Position detection device" was invented by Yohei Shirakawa (Tokyo), Yoshiaki Yanagisawa (Tokyo), Yuta Sugiyama (Tokyo) and Naoki Futakuchi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A position detection device, configured to detect a position of a shaft that moves forward and backward in an axial direction, is provided with an excitation coil that generates an alternating magnetic field; a target which is fixed to the shaft and in which a magnetic flux of the alternating magnetic field is interlinked; and a detection coil in which the magnetic flux of the alternating magneti...