US Patent Issued to China University of Petroleum-Beijing on Feb. 25 for "Experimental apparatus for rock-breaking through vibration impact" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,234,690, issued on Feb. 25, was assigned to China University of Petroleum-Beijing (Beijing).

"Experimental apparatus for rock-breaking through vibration impact" was invented by Wenhao He (Beijing), Chao Xiong (Beijing), Ran Ji (Beijing), Huaizhong Shi (Beijing), Zhongwei Huang (Beijing), Zhenliang Chen (Beijing), Zongjie Mu (Beijing) and Xinkang Fu (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "An experimental apparatus for rock-breaking through vibration impact, including a confining pressure loading assembly, a drill bit, a drill rod, a drilling fluid circulation assembly, a rotary impact assembly and an axial impact assembly. The confining p...