US Patent Issued to SPM Oil & Gas on Sept. 9 for "Two-pin clapper check valve" (Texas Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,410,869, issued on Sept. 9, was assigned to SPM Oil & Gas Inc. (Fort Worth, Texas).

"Two-pin clapper check valve" was invented by Nadiya V. 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 clapper valve assembly includes a valve body defining a longitudinal flow bore, a hanger disposed in the valve body, a link piece coupled to the hanger, a first pin coupled between the hanger and the link piece, wherein the link piece is configured to rotate, relative to the hanger, about the first pin, a clapper coupled to the link piece, and a second pin coupled between the li...