ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,173, issued on Feb. 24, was assigned to Lingong Heavy Machinery Co. Ltd. (Shandong, China).
"Four-wheel steering control system and control method therefor" was invented by Zhaolliang Zhang (Shandong, China), Shaolei Li (Shandong, China), Dehong Wang (Shandong, China), Desen Xue (Shandong, China), Zengzhi Zhao (Shandong, China), Xiaofei Deng (Shandong, China) and Bing Guo (Shandong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A The four-wheel steering control system includes a front drive axle, a front drive cylinder, a rear drive axle, a rear drive cylinder, a first reversing valve, a second reversing valve, and a switch valve. The front d...