ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,892, issued on Feb. 3, was assigned to CRRC QINGDAO SIFANG Co. LTD. (Shandong, China).
"Assembly-type car body and rail vehicle" was invented by Sansan Ding (Shandong, China), Peipei Wu (Shandong, China), Aiqin Tian (Shandong, China), Haiting Liang (Shandong, China) and Hongwei Zhao (Shandong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An assembly-type car body and a rail vehicle. A roof, an underframe, side roofs and side walls of the assembly-type car body are separately formed by assembling double-layer pultruded profiles, and each double-layer pultruded profile comprises an outer plate, an inner plate and cavities formed by separating a...