US Patent Issued to Zipline International on June 9 for "Reduced noise rotor for aerial vehicles" (California Inventor)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,591, issued on June 9, was assigned to Zipline International Inc. (South San Francisco, Calif.).

"Reduced noise rotor for aerial vehicles" was invented by Brendan J.D. Wade (South San Francisco, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An aerial vehicle is disclosed including a rotor assembly having a downstream blade and a upstream blade. The downstream and upstream blades are configured to rotate about an axis of rotation. The downstream blade may be arranged extending outward from the axis of rotation along a downstream blade orientation. The upstream blade may be arranged extending outwards from the axis of rotation along a upstream ...