US Patent Issued to RTX on Sept. 29 for "Fabrication of cooling holes using laser machining and ultrasonic machining" (Connecticut, California, Florida Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,671, issued on Sept. 29, was assigned to RTX Corp. (Farmington, Conn.).

"Fabrication of cooling holes using laser machining and ultrasonic machining" was invented by Zhigang Wang (South Windsor, Conn.), John D. Riehl (Hebron, Conn.), Andrew J. Lazur (Laguna Beach, Calif.), Robin H. Fernandez (East Haddam, Conn.), Paul F. Croteau (Columbia, Conn.), Gajawalli V. Srinivasan (South Windsor, Conn.) and Ashley A. Smith (Royal Palm Beach, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of machining cooling holes includes providing a workpiece in which a cooling hole is to be formed. The cooling hole, once formed, defines distinct first and se...