ALEXANDRIA, Va., May 12 -- United States Patent no. 12,622,527, issued on May 12, was assigned to JASON FURNITURE (HANGZHOU) Co. LTD. (Hangzhou, China).
"Sofa unfolding device" was invented by Yunhai Li (Hangzhou, China), Yuanfeng Feng (Hangzhou, China), Linlin Wu (Hangzhou, China), Zhiyu Wang (Hangzhou, China) and Liang Cui (Hangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application relates to a sofa unfolding device capable of avoiding forward overturning, including a seat, a backrest assembly, a linkage assembly, and a leg rest assembly, wherein the linkage assembly is rotatably connected on the seat, the backrest assembly is rotatably connected to a rear end of the seat via th...