ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,978, issued on Nov. 18, was assigned to The Texas A&M University System (College Station, Texas).

"Fluid sealing of moving shafts for high-pressure chambers" was invented by Andreas A. Polycarpou (College Station, Texas), Pixiang Lan (Urbana, Ill.) and Md Saifur Rahman (College Station, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tribometer includes a main chamber to conduct testing under controlled environmental conditions, such as different chamber pressures and different temperatures. A shaft extends through the main chamber to initiate component movement inside the main chamber. A secondary fluid seal chamber is formed in a wall of th...