ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,520, issued on Aug. 12, was assigned to Archer Aviation Inc. (San Jose, Calif.).
"Rotor assembly including tapered magnets within a retaining sleeve and a method for assembling the same" was invented by Scott Graves (Felton, Calif.) and Diego Silva (San Jose, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotor assembly has a sleeve, a rotor hub, a lamination core, and a plurality of tapered magnets disposed circumferentially around an inner diameter of the sleeve. The plurality of tapered magnets are configured to abut on one another. The plurality of tapered magnets includes a first set of tapered magnets and a second set of tapered magne...