ALEXANDRIA, Va., June 12 -- United States Patent no. 12,301,086, issued on May 13, was assigned to Korea Institute of Ocean Science & Technology (Busan, South Korea).
"Magnetic levitation rotor sail" was invented by Hee Jin Kang (Gyeryong-si, South Korea) and Yunho Kim (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A magnetic levitation rotor sail is proposed. The rotor sail may include a coil unit provided at a lower portion of a body of the rotor sail, and an electromagnet configured to levitate the coil unit. The rotor sail may also include a support member supporting the electromagnet, and a gap sensor provided at the support member and configured to measure a gap between the coil u...