ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,250, issued on Feb. 24, was assigned to Neoperl GmbH (Mullheim, Germany).
"Check valve with integrated pressure relief valve" was invented by Martin Fangmeier (Auggen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A check valve having a valve that is movable by incoming water in the flow direction, from a closed position, where it bears against a first valve seat, against a restoring force into an open position, where it is raised from the first valve seat, and having a pressure relief valve with a closing member that is movable by pressure of the water flowing back against the flow direction, from a closed position, in which it bears again...