ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,709,313, issued on Aug. 18, was assigned to Modular Railway Systems (Alameda, Calif.).
"Rail bond monitor" was invented by Roger French (St. Augustine, Fla.) and JEffrey Randall Koval (Lee's Summit, Mo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The rail bond monitor has a frequency transmitter to generate an electronic signal at a known energy level to pass through two or more impedance bonds located at an insulated rail junction between two sections of railroad tracks in order to allow a change in energy level, under analysis, at a receiver to be detected from an expected amount of energy level. An energy level detector is coupled to the receiver ...