ALEXANDRIA, Va., June 16 -- United States Patent no. 12,658,749, issued on June 16, was assigned to Delta Electronics Inc. (Taoyuan City, Taiwan).

"Flux-concentrating rotor structure" was invented by Xiaoxiang Zhang (Taoyuan City, Taiwan), Hsin-Yi Huang (Taoyuan City, Taiwan), Ji Dai (Taoyuan City, Taiwan) and Tzu-Ting Hsu (Taoyuan City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A flux-concentrating rotor structure is disclosed and includes an iron core and plural magnet components. The iron core is formed by stacking plural silicon steel sheets and includes plural magnet-receiving slots arranged along a circumferential direction. Each magnet-receiving slot has a T-shaped section. Each two adjace...