US Patent Issued to NK Photonics on Aug. 4 for "Performance monitoring system for disc cutter of tunnel boring machine" (Taiwanese Inventors)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,710, issued on Aug. 4, was assigned to NK Photonics Ltd. (Taipei, Taiwan).

"Performance monitoring system for disc cutter of tunnel boring machine" was invented by Nan-Kuang Chen (Taipei, Taiwan), Si-Chi Chen (Taipei, Taiwan), Hsuan-Yu Chen (Taipei, Taiwan) and Wan-Shan Tsao (Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A performance monitoring system for a disc cutter of a tunnel boring machine (TBM) is provided, and includes a disc cutter body, a shaft assembly and an isolation boss; the shaft assembly includes a shaft main body and a bearing spacer located on the shaft main body; a rotating mechanism is arranged in a space between...