ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,094, issued on Dec. 23, was assigned to HL MANDO Corp. (Gyeonggi-do, South Korea).
"Coupling structure of ball nut and damper and hydraulic supply apparatus employing the same" was invented by Dong Jin Yun (Gyeonggi-do, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a hydraulic supply apparatus, one or more fitting grooves are formed along the outer circumferential surface of a ball nut, and corresponding fitting protrusions are formed on the inner circumferential surface of a damper coupled to the ball nut. This configuration minimizes damper movement, thereby reducing vibration and noise caused by collision with a bushing member dur...