ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,481,320, issued on Nov. 25, was assigned to Google LLC (Mountain View, Calif.).
"Spring-loaded pin status detection" was invented by Roth Kyle Wiedrick (Mountain View, Calif.) and Scott Edmund Stanford (Mountain View, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Arrangements herein are directed to pin state detection systems and arrangements for using such systems. A pin detection system can include a pin. The pin can be in one of multiple states, such as a depressed state and an undepressed state. The system can include a transmit coil and a receive coil that encircles the pin. The system can also include a processing system that causes a tran...