ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,985, issued on July 29, was assigned to VRG Controls LLC (Lake Zurich, Ill.).
"Monitor control valve with backflow prevention" was invented by Vladimir Rimboym (Highland Park, Ill.) and James M. Garvey (Wheaton, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas supply line control system and method for preventing flow reversal due to an upstream pressure drop in a natural gas supply line, the system and method include setting a threshold low pressure for the upstream gas flow, continually sensing the upstream pressure, activating a trigger valve when the upstream pressure falls below the threshold low pressure, and closing a control valve in...