US Patent Issued to PARTS KOREA on July 7 for "Propeller assembly" (South Korean Inventors)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,393, issued on July 7, was assigned to PARTS KOREA Co. Ltd (Haman-gun, South Korea).

"Propeller assembly" was invented by Chang Su Shim (Changwon-si, South Korea) and Kwang Nam Kim (Busan, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A propeller assembly, includes: a shaft having a cylindrical shape and connected to the drive shaft of a motor; a thrust washer provided on the outer surface of the shaft; a hub provided on the outer surface of the shaft, with a thrust washer arranged on one side and multiple ribs protruding from its outer surface; a bushing formed on the outer surface of the hub, having a polygonal column shape; a propelle...