ALEXANDRIA, Va., June 16 -- United States Patent no. 12,653,311, issued on June 16, was assigned to HAINING HELI MACHINERY & TECHNOLOGY Co. LTD. (Jiaxing, China).

"Chair frame and casual chair" was invented by Xiqi Sun (Jiaxing, China), Qiu Xu (Jiaxing, China), Mengjie Li (Jiaxing, China) and Junjun Dai (Jiaxing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A chair frame and a casual chair are provided. The chair frame includes a frame mechanism, a connecting rod system and a seat mechanism. The connecting rod system includes a basic component fixed to the frame mechanism; a first front arm pivotally connected to the basic component; a first rear arm pivotally connected to the basic component; a firs...