ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,049, issued on Dec. 16, was assigned to Televic Rail NV (Izegem, Belgium).
"Emulated voltage-free safety contact" was invented by Alexandre Fonseca (Tourcoing, France) and Bram Baert (Hooglede, Belgium).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention concerns a safety contact for a safety line in a train, the safety contact comprising a controller and a safety switch circuit, wherein the controller comprises a sensor input for receiving signals indicating failure, wherein the safety contact comprises an input for a safety line input signal, which input is operably connected to the controller, whereby the controller is configured ...