ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,305, issued on Jan. 13, was assigned to RICO SICHERHEITSTECHNIK AG (Herisau, Switzerland).
"Ball valve, in particular for explosion isolation in process pipelines" was invented by Roland Hafner (Uzwil, Switzerland), Jurgen Kern (Weinfelden, Switzerland), Aleksandar Agatonovic (Uzwil, Switzerland), Daniel Zellweger (Gais, Switzerland) and Mario Allgauer (Sirnach, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A ball valve is configured for explosion isolation in process pipelines and includes a housing pipe (2) coaxial with the through-flow direction (F). Bearing rings (6, 7) are flanged respectively onto the end faces (3, 4) of the housi...