ALEXANDRIA, Va., June 10 -- United States Patent no. 12,292,116, issued on May 6, was assigned to RTX Corp. (Farmington, Conn.).
"Carbon seal assembly" was invented by Pantcho P. Stoyanov (West Hartford, Conn.), Jonathan F. Zimmitti (Glastonbury, Conn.) and Nasr A. Shuaib (Watertown, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A seal assembly includes a housing that includes a seal flange at least partially defining a seal opening. A carbon seal is located at least partially in the seal opening and includes a first axially facing surface. The seal flange includes an axially facing surface that has a carbide based coating and a diamond-like carbon coating in engagement with the first axially facing s...