ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,313, issued on July 8, was assigned to HIWIN TECHNOLOGIES CORP. (Taichung, Taiwan).
"Ball spline with lubrication passage" was invented by Yu-Min Liang (Taichung, Taiwan), Hao-Ti Chuang (Taichung, Taiwan) and Shang-Hua Tsai (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A ball spline includes a spline shaft, an outer sleeve, and two circulation elements. The outer sleeve is slidably sleeved on the spline shaft to form a load channel therebetween for installation of balls, and has an oil guide channel inside. The circulation elements are mounted to two outer end surfaces of the outer sleeve and each has an oil filling hole, an oil st...