ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,809, issued on Aug. 26, was assigned to Bestway Oilfield Inc. (Channelview, Texas).
"Dynamic slab gate valves" was invented by Don Channing Gramlich (Richmond, Texas) and Mehul Jain (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dynamic slab gate valve for use in controlling fluid flow through pipelines and other tubulars has a dynamic seat assembly and a dynamic skirt assembly. The dynamic seat assembly is urged toward a gate of the dynamic slab gate valve by an energizer to maintain a seal between a seat and the gate. The dynamic skirt assembly is urged toward the gate of the dynamic slab gate valve by an energizer to maintain a seal wi...