US Patent Issued to NHK SPRING on Sept. 8 for "Rotor and dynamo-electric machine" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,732,040, issued on Sept. 8, was assigned to NHK SPRING Co. LTD. (Yokohama, Japan).

"Rotor and dynamo-electric machine" was invented by Youhei Kameda (Yokohama, Japan), Tsuyoshi Matsuda (Yokohama, Japan), Yoshikazu Mineda (Yokohama, Japan) and Soichi Nakayama (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "This rotor includes a rotor shaft, a permanent magnet held at an outer periphery of the rotor shaft, and a magnet reinforcement tube formed in a cylindrical shape and covering the permanent magnet from an outer peripheral side of the permanent magnet. The magnet reinforcement tube includes plural layers layered in a radial direction, an...