US Patent Issued to DELTA T on May 13 for "Ceiling fan with concentric stationary tube and power-down features" (American, Australian Inventors)

ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,839, issued on May 13, was assigned to DELTA T LLC (Lexington, Ky.).

"Ceiling fan with concentric stationary tube and power-down features" was invented by Richard M. Aynsley (Doonan, Australia), Richard W. Fizer (Lexington, Ky.), Richard A. Oleson (Lexington, Ky.) and J. Carey Smith (Lexington, Ky.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fan system comprises a hub, a plurality of fan blades, a drive system, and a stationary tube. The hub is configured to rotate. The fan blades are mounted to the hub. The drive system comprises a rotatable hollow output shaft. The hollow output shaft is in communication with the hub, such that the drive syst...