ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,028, issued on March 17.
"Self-regulating control valve" was invented by Dallas Chism Watson (Guthrie, Okla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A self-regulating control valve including a valve mechanism for controlling the flow of fluid from a high-pressure fluid supply to a low-pressure flow line, the low-pressure flow line having a max pressure for fluid flowing therethrough, a cylinder with a piston head therein and a spring acting to force the piston head in a close direction, the spring having a pressure force. The valve also includes a sample fluid line directing a sample fluid from the low-pressure flow line to a top side of the...