US Patent Issued to Nanjing University of Aeronautics and Astronautics on April 29 for "Rotor craft and negative torsion variable paddle thereof" (Chinese Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,220, issued on April 29, was assigned to Nanjing University of Aeronautics and Astronautics (Nanjing, China).

"Rotor craft and negative torsion variable paddle thereof" was invented by Zhe Chen (Nanjing, China), Xu Zhou (Nanjing, China), Qijun Zhao (Nanjing, China), Zhuangzhuang Cui (Nanjing, China), Binwu Ren (Nanjing, China) and Muyang Lin (Nanjing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a negative torsion variable paddle and a control assembly thereof. The paddle includes rigid first paddles and rigid second paddles. When a driver pushes a root railing edge, the first paddle is not flexibly deformed, a...