ALEXANDRIA, Va., June 6 -- United States Patent no. 12,283,911, issued on April 22, was assigned to Mainspring Energy Inc. (Menlo Park, Calif.).

"Auto-braking for an electromagnetic machine" was invented by Anthony Da Costa (Mountain View, Calif.), Matthew Roelle (Belmont, Calif.), John Powers (Menlo Park, Calif.), Patrick Gorzelic (San Francisco) and Christopher David Gadda (Palo Alto, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event. A polarity indicative of an electromotive force in determined in at least one phase of the linear multiphase electromagnetic machine ...