ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,994, issued on Dec. 30, was assigned to Safran Aircraft Engines (Paris).

"Protection element for a compressor drum and method for repairing a compressor drum" was invented by Jean-Hilaire Lexilus (Moissy-Cramayel, France), Thomas Jean Georges Seguin (Moissy-Cramayel, France) and Davy Clerc (Moissy-Cramayel, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A protection element (45.1, 45.2) for a compressor drum (20) can be arranged at least in part between a blade root (25) and the compressor drum (20). The protection element can include: a first lateral wall (51.1, 51.2) including an inner portion (54.1, 54.2) intended to cover an inner rounded...