ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,773, issued on Oct. 21, was assigned to HL MANDO Corp. (Gyeonggi-do, South Korea).
"Motor manufacturing method and motor manufacturing system" was invented by Young Kyu An (Gyeonggi-do, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a method and system for manufacturing a motor in which noise and current ripple caused by mechanical friction between a brush and a commutator have been reduced. In detail, a motor manufacturing method of the present disclosure comprises the steps of: assembling a shaft, an armature fixed on the shaft to be rotatably arranged, a commutator fixed on the shaft to rotate togethe...