ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,130, issued on Dec. 30, was assigned to TTX Co. (Chicago).
"Positional load door monitoring system" was invented by Erik L. Gotlund (Green Oaks, Ill.), David P. Cannon (Chicago), Michael E. Antonakakis (Colorado Springs, Colo.) and Thomas M. Kingsley (Chicago).
According to the abstract* released by the U.S. Patent & Trademark Office: "Systems, methods, and non-transitory machine-readable media for tracking the state of a rail car are disclosed. In one or more example embodiments, a device may use sensors such as a spring height sensor or a time of flight sensor to determine a status of a load car, which may be associated with a location. The system may determine a delivery event...