US Patent Issued to Hunan University of Science and Technology on Sept. 1 for "Forward and reverse circulation assembly for core drilling tools and coring operation method utilizing the same" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,477, issued on Sept. 1, was assigned to Hunan University of Science and Technology (Xiangtan, China).

"Forward and reverse circulation assembly for core drilling tools and coring operation method utilizing the same" was invented by Buyan Wan (Xiangtan, China), Yongping Jin (Xiangtan, China), Xiangyang Dong (Xiangtan, China) and Jialiang Wang (Xiangtan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a forward and reverse circulation assembly for core drilling tools and a coring operation method using the same. The forward and reverse circulation assembly includes an outer tube body and an inner receiving body arranged inside it, de...