ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,632, issued on Sept. 16, was assigned to Srinath Mallikarjunan (Chennai, India).
"Apparatus for aerial transportation of payload" was invented by Srinath Mallikarjunan (Chennai, India).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vertical take-off and landing aircraft includes a primary rotor unit having a rotor axis, an upper rotor system, and a lower rotor system. The upper rotor system includes an upper swashplate configured to translate along the rotor axis and not configured to tilt relative to the rotor axis and a pair of top blades configured to rotate about the rotor axis. Translation of the upper swashplate causes a pitch of each of the...