ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,419, issued on July 21, was assigned to CRRC Nanjing Puzhen Co. Ltd. (Nanjing, China).
"Coupler buffer device mounting structure with small-fastening-torque pushing under compact space" was invented by Xingwen Wang (Nanjing, China), Juxing Liang (Nanjing, China), Kang Li (Nanjing, China) and Yulong Liu (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A coupler buffer device mounting structure for small-fastening-torque pushing under a compact space includes a double-headed stud passing through an installation fabrication hole of a vehicle body structure; a nut screwed on a first end of the double-headed stud; a push nut screwed on a se...