US Patent Issued to BEIJING JINGDONG QIANSHI TECHNOLOGY on May 5 for "Ball spline device, automated guided vehicle and stereoscopic warehouse system" (Chinese Inventors)

ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,437, issued on May 5, was assigned to BEIJING JINGDONG QIANSHI TECHNOLOGY Co. LTD. (Beijing).

"Ball spline device, automated guided vehicle and stereoscopic warehouse system" was invented by Chen Liu (Beijing), Zongjing Yu (Beijing), Guoku Song (Beijing) and Xu Liu (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ball spline device includes a spline shaft, the outer side wall provided with raceway grooves extending in the axial direction, each raceway groove comprising, a first groove section and a second groove section, and the width of the second groove section being greater than that of the first groove section; a spline nut coaxially fitt...