ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,418, issued on Feb. 24, was assigned to Raytheon Co. (Arlington, Va.).

"Explosive firing train with a single explosive transfer interface" was invented by Coulton T. Sadler (Tucson, Ariz.), Eric D. Goertz (Whitewater, Colo.), Montgomery Carlo (Sahuarita, Ariz.) and Christopher F. Williams (Tucson, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An EFI or LEEFI provides enhanced detonation energy sufficient to directly detonate a main charge to improve the reliability and ease the qualification of an explosive firing train. This is accomplished by forming the EFI's output charge from an explosive material typically used as a booster explosive (e...