ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,943, issued on June 23, was assigned to Whisper Aero Inc. (Crossville, Tenn.).

"Propulsor fan and drive system" was invented by Mark Douglass Moore (Crossville, Tenn.), Ian Andreas Villa (Nashville, Tenn.), Devon Jedamski (Nashville, Tenn.) and Xiaofan Fei (Bellevue, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A propulsor fan and drive system having reduced noise emission is disclosed. The propulsor fan includes a blade fan having a plurality of blades. The blade fan is tensioned at the tips of the plurality of blades. By tensioning the tips of the blades, an angle of the blades is maintained during operation of the propulsor fan thereby re...