ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,753, issued on May 20, was assigned to Amazon Technologies Inc. (Seattle).

"Rapid braking of shuttles powered by electromagnets" was invented by Michael D. Assadi (Seattle), Sudhakar Teegavarapu (Hopkinton, Mass.), Ganesh Krishnamoorthy (Seattle), Erika Regan Storvick (Broomfield, Colo.) and Vivek S. Narayanan (Franklin, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are disclosed for rapid braking of shuttles powered by electromagnets. An example system may include a first brake coupled to a track at a first location, the first brake including a first housing, a first retractable pin, a second retractable pin, a first actu...