ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,459,619, issued on Nov. 4, was assigned to GUANGDONG EPROPULSION TECHNOLOGY Ltd. (Dongguan, China).

"Trim device and control method thereof, water propeller, water-mobile device, and medium" was invented by Qihao Gao (Dongguan, China), Shizheng Tao (Dongguan, China) and Xiaokang Wan (Dongguan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A trim device and a control method thereof, a water propeller, water mobile device and a medium, are provided. The control method comprises: controlling the trim device to trim up and obtaining a trim angle of the trim device when receiving a trim-up command. When the trim angle reaches an entry angle, maintainin...