US Patent Issued to WON ST on March 11 for "Ball spline having reinforcement bush part" (South Korean Inventors)

ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,613, issued on March 11, was assigned to WON ST Co. LTD. (Hwaseong-si, South Korea).

"Ball spline having reinforcement bush part" was invented by Hyeok Do Kwon (Siheung-si, South Korea), Taek Won Lee (Seoul, South Korea), Gi Dong Son (Incheon, South Korea) and Dong Hyup Nam (Siheung-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ball spline having reinforcement bush parts includes a spline shaft having concave track grooves formed to extend along the longitudinal direction thereof; a nut part in which the spline shaft is inserted and movable along the longitudinal direction thereof; and a plurality of balls provided between the nu...