ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,041, issued on April 29, was assigned to Bestway Oilfield Inc. (Channelview, Texas).
"Slab gate valves and methods of retrofitting" was invented by Don Channing Gramlich (Richmond, Texas) and Mehul Jain (Humble, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "In one instance, a dynamic slab gate valve includes a valve body having a through-bore formed therethrough; a round gate cavity formed within the valve body and orthogonal to and bisecting the though-bore; and at least two retrofit slabs located within the round gate cavity. The retrofit slabs form a slab gate cavity having two parallel planar sides. A slab gate is disposed within the slab ...