ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,828, issued on Dec. 23, was assigned to JIANGSU XCMG CONSTRUCTION MACHINERY RESEARCH INSTITUTE LTD. (Xuzhou, China).

"Rotary frame and grader with same" was invented by Penglong Hou (Jiangsu, China), Le Gao (Jiangsu, China), Hongfeng Ma (Jiangsu, China) and Junjie Duan (Jiangsu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary frame includes a first connecting member of the rotary frame has an arc-shaped concave part. Each second connecting member is non-coplanar with the first connecting member and has a mounting hole. A first reinforcing member is connected between a first end of the first connecting member and one of the second conne...