ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,861, issued on Nov. 3.
"Directional control valve" was invented by Dallas Chism Watson (Guthrie, Okla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A directional control valve wherein the valve includes a body having radial directed ports disposed therein. The valve also includes a sleeve disposed in the body, the sleeve having radial directed ports disposed therein in general alignment with the ports in the body. The valve further includes a spool slidably disposed within the sleeve to direct a high pressure operational fluid and a discharge fluid to the desired ports in the sleeve and body. A method that includes the step of directing a high pres...