ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,306, issued on Dec. 16, was assigned to China University of Mining and Technology (Xuzhou, China).
"Constant-speed dynamic direct-shear test system and test method for rock mass structural plane" was invented by Liyuan Yu (Xuzhou, China), Minghe Ju (Xuzhou, China), Baoshan Yao (Xuzhou, China), Lihua Hu (Xuzhou, China), Mingwei Zhang (Xuzhou, China), Zejun Tao (Xuzhou, China), Zichen Yuan (Xuzhou, China) and Xiaoxiao Su (Xuzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A constant-speed dynamic direct-shear test system and a test method for a rock mass structural plane are provided; the system includes a bearing frame, a loading frame, a h...