ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,516, issued on July 7, was assigned to Proserv Gilmore Valve LLC (Houston).
"Check valve" was invented by Ryan Bludau (Katy, Texas), Christopher Clark Barnes (Houston) and Stuart Macintyre (Bentonville, Ark.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A valve includes an inlet, an annular seat, a poppet having an annular body having an inner volume and an annular seat facing surface selectively contactable with the annular seat, and at least one alignment pin extending inwardly of the inner volume of the poppet, an outlet fluidly connectable to the inlet; and an alignment tube disposed between the outlet and the inlet, the alignment tube extending...