ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,759, issued on Oct. 21, was assigned to AAC Technologies (Nanjing) Co. Ltd. (Nanjing, China).
"Direct drive transmission system" was invented by Weiling Shi (Nanjing, China), Shun Guo (Nanjing, China) and Wanlun Wang (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure provides a direct drive transmission system including a mover unit and a stator unit driving the mover unit to move. The stator unit includes a stator assembly, two first end covers, and two first guide rails. A side of the first end cover close to the first guide rail is recessed inwardly to form a first mounting groove, and two ends of the first guide rail a...