ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,345, issued on July 1, was assigned to Sayatva LLC (Houston).
"Gate valve and seat for a gate valve" was invented by Gayathri Srinivasa Ragavan (Irvine, Calif.) and S. Hari Vignesh (Pudukottai, India).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gate valve comprises a valve body including a cavity and a flow bore with a flow axis. A gate in the cavity is movable along a stem axis between an open and closed position. A first seat is in a first pocket of the body on one side of the gate. An upstream seal is disposed between upstream opposing faces of the first seat and the first pocket, these upstream opposing faces being parallel to the bore axis, ...