ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,434, issued on June 3, was assigned to SPM Oil & Gas Inc. (Fort Worth, Texas).
"Stabilized check valve" was invented by Nadiya Fuller (Plano, Texas) and Brian C. Witkowski (Weatherford, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "In some implementations, a check valve may include a hanger configured in a valve body in a position that is approximately parallel to a direction of flow, wherein the hanger includes a first mating surface on a bottom face of the hanger. The check valve may include a clapper rotatably connected to the hanger, wherein the clapper is configured to rotate between a closed position and an open position, wherein the cla...