ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,834, issued on June 24, was assigned to GUANGDONG LAC SMART LIGHTING Co. LTD (Dongguan, China).

"Fan device" was invented by Xiaoming He (Guangdong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fan device is provided, including a fan assembly. The fan assembly includes fan blades, locking sliders, adjusting components, and elastic components. A peripheral side wall of the rotating module defines movable cavities, and each of the locking sliders is slidable and disposed in a corresponding one of the movable cavities. Each of the elastic components is disposed in a corresponding one of the movable cavities, and two ends of each of the elasti...