ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,665, issued on March 11.
"Seal structure with annular packing" was invented by Nobuo Tojo (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A seal structure includes an annular female adapter, at least one annular packing, and an annular male adapter. The male adapter and the female adapter sandwich the at least one packing. The at least one packing includes a packing convex portion adjacent to the female adapter and a packing concave portion adjacent to the male adapter. The male adapter includes an adapter convex portion that contacts the packing concave portion. The female adapter includes an adapter concave portion that contacts the packing...