ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,247, issued on Dec. 23, was assigned to Archer Aviation Inc. (San Jose, Calif.).
"Propulsion system for electric aircraft" was invented by James Orbon (Newport Beach, Calif.) and Alan Buehne (Mission Viejo, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a first aspect, described herein is a direct drive electric aircraft propulsion wherein the propulsion rotor torque is decoupled from the primary proprotor mast moment forces. A hub shaft locates the propulsion proprotor assembly in space relative to the aircraft nacelle, while a motor torque coupler transfers torque from the electric motor to the propulsion rotor while resolving a negligib...