ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,542, issued on Nov. 11, was assigned to MAC Valves Inc. (Wixom, Mich.).
"Valve having a quad ring seal" was invented by Brett Landacre (Bloomfield Hills, Mich.) and Jeffrey Simmonds (Commerce Township, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A valve apparatus including a hollow valve retainer that includes a poppet slidingly positioned therein. The poppet includes a radially inwardly extending groove that is configured for receipt of a quad-ring sealing member that improves the sealing characteristics of the valve apparatus, as well as reduces friction between the poppet and valve retainer to increase the useful life of the valve appara...