US Patent Issued on Jan. 28 for "System and method for simultaneous excavation and segment erection of TBM by thrust shell" (Canadian, American Inventors)

ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,498, issued on Jan. 28.

"System and method for simultaneous excavation and segment erection of TBM by thrust shell" was invented by Behzad Khorshidi (Oakville, Canada) and Jamal Rostami (Arvada, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method for simultaneous excavation and segment erection of Tunnel Boring Machine (TBM) by Thrust shell system is an invention in tunnelling industry which will provide possibility of erection of the segmental ring while TBM is excavating and advancing forward with minimum interruption which will result in significantly increasing of the tunneling speed. The increased speed of the tunnelling wi...