ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,451, issued on Oct. 14, was assigned to SRI Energy Inc. (Sugar Land, Texas).
"Gate valve" was invented by Alagarsamy Sundararajan (Sugar Land, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "An embodiment includes a gate valve comprising: a valve body including a cavity coupled to a channel having proximal and distal portions; a gate to seal and unseal the channel; proximal and distal seats adjacent the gate; wherein (a) the proximal seat traverses towards the gate and stops at a first position when the gate is closing and the proximal channel portion is more highly pressurized than the cavity, and (b) the distal seat slides away from the gate ...