US Patent Issued to Zhejiang University City College on Sept. 8 for "3D printing-based device for shield tunnel lining formation" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,728,588, issued on Sept. 8, was assigned to Zhejiang University City College (Hangzhou, China).

"3D printing-based device for shield tunnel lining formation" was invented by Zhi Ding (Hangzhou, China), Ke Lou (Hangzhou, China), Yingtao Hu (Hangzhou, China), Shijie Zhang (Hangzhou, China), Zhen Wang (Hangzhou, China), Wenwei Zhou (Hangzhou, China) and Huiping Tang (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a 3D printing-based device for shield tunnel lining formation, which utilize a more rapid and efficient extrusion process. Solid printing materials are fed into a specially structured tunnel forming ...