ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,807, issued on Aug. 26, was assigned to ESA S.P.A. (Curno, Italy).
"Double safety valve" was invented by Milco Dalfovo (Villa di Serio, Italy), Simone Losa (Calolziocorte, Italy) and Andrea Baio (Reviolo, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "A double safety valve includes a valve body having an inlet opening for a pressurized fluid and an outlet opening, both communicating with connected chambers within the valve body which connection may be shut-off by shutters activated by corresponding electric coils. The shutters are placed along a common longitudinal axis opposite to each other, and activated independently for shutting off the c...