ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,150, issued on Nov. 18, was assigned to Probe Technology Services Inc. (Fort Worth, Texas).
"Magnetic-key safety interlock system" was invented by Roger Archibald (Hurst, Texas), Bulent Finci (Aledo, Texas), Jacob Walsh (Benbrook, Texas) and Stephen Cattanach (Hempstead, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "An interlock system for explosive operations includes an array of magnet sensors configured to engage an array of magnets in a magnetic key. The key may be selectively positioned to activate select sensors while the other remains deactivated. Various sequences of activated and deactivated sensors correspond to various states of th...