ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,408, issued on April 8, was assigned to DELTA ELECTRONICS INC. (Taoyuan, Taiwan).
"Ceiling fan" was invented by Sheng-Hsiang Huang (Taoyuan, Taiwan), Chan-Yuan Tsao (Taoyuan, Taiwan), Lung-Sheng Pan (Taoyuan, Taiwan) and Yen-Lin Chen (Taoyuan, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A ceiling fan includes an outer shield, a middle ring, a blade bracket, and a fan blade. The middle ring is pivotally connected to the outer shield and rotates relative to the outer shield. The blade bracket protrudes from the middle ring and has two guiding surfaces located on opposite sides of the blade bracket. The fan blade is combined with the middle r...