ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,494,681, issued on Dec. 9, was assigned to AMOTECH Co. LTD. (Incheon, South Korea).
"Electric motor" was invented by Byung Soo Kim (Incheon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric motor for reciprocating an object along a rod having a predetermined length is provided, comprising: a housing; a rotor unit that is mounted to the inside of the housing via a bearing to be rotatable and comprises a rotor shaft, which is axially-coupled to the rod to linearly reciprocate along the rod during rotation, and a plurality of magnets mounted along the circumference direction of the rotor shaft; and a stator unit comprising at least one...