ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,343, issued on March 18, was assigned to Amazon Technologies Inc. (Seattle).

"Automated self-calibration and maintenance for container shuttles" was invented by Vivek S. Narayanan (Franklin, Tenn.), Rajeev Dwivedi (Sammamish, Wash.), Michael Alan Bray (Elkhorn, Neb.) and Ganesh Krishnamoorthy (Seattle).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are disclosed for automated self-calibration and maintenance for container shuttles. An example system for automated repairs may include a track, a shuttle coupled to a permanent magnet, the shuttle configured to move along the track, and an electromagnet disposed along the track, wher...