ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,732,053, issued on Sept. 8, was assigned to Proterial Ltd. (Tokyo) and Yamaha Robotics Co. Ltd. (Tokyo).
"Three-phase coil structure and linear motor" was invented by Osamu Kakutani (Musashimurayama, Japan), Seiki Takedomi (Takasaki, Japan), Tatsuya Nakano (Takasaki, Japan) and Minoru Yoshida (Takasaki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A three-phase coil structure (30) having a two-phase coil set (32) including a plurality of rectangular air-core coils arranged side by side so as to be adjacent to each other in the same plane includes a one-phase coil set (31) including two air-core coils having different sizes and bending angles ben...