US Patent Issued to Chang'an University on July 14 for "Tunnel constraint anchor cable and method for improving stability of initial support structure" (Chinese Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,451, issued on July 14, was assigned to Chang'an University (Xi'an, China).

"Tunnel constraint anchor cable and method for improving stability of initial support structure" was invented by Jianxun Chen (Xi'an, China), Lijun Chen (Xi'an, China), Lixin Zhang (Xi'an, China), Yanbin Luo (Xi'an, China) and Weiwei Liu (Xi'an, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tunnel constraint anchor cable and a method for improving stability of an initial support structure. The tunnel constraint anchor cable comprises steel strands (1) anchored in surrounding rock, first anchor plates (2) and first anchorage devices (3) which are installed on the sur...