ALEXANDRIA, Va., June 10 -- United States Patent no. 12,294,244, issued on May 6, was assigned to NIDEC Corp. (Kyoto, Japan).
"Rotor, rotating electrical machine, and drive device" was invented by Atsushi Sugaya (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotor includes a magnet, a rotor core having an axially extending hole in which the magnet is accommodated, and a resin in the hole. The rotor core includes a first block and a second block that is arrayed in an axial direction together with the first block and is arranged such that a circumferential position of the hole is shifted with respect to the first block. Each of the first and second blocks has a resin groove that communicates wi...