ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,391, issued on Aug. 12, was assigned to CENTRAL SOUTH UNIVERSITY (Changsha, China).

"Rock-piercing flexible rock drilling robot and rock breaking method" was invented by Longjun Dong (Changsha, China), Jian Wang (Changsha, China), Yihan Zhang (Changsha, China), Jiachuang Wang (Changsha, China), Zheng Tang (Changsha, China) and Zhongwei Pei (Changsha, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rock-piercing flexible rock drilling robot and a rock breaking method therefor are disclosed. The robot includes a control system, a head, and at least one tail. The head includes a head housing, a propulsion turntable, a drilling mechanism, a hydra...