ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,471, issued on Aug. 26, was assigned to RTX Corp. (Farmington, Conn.).
"Ultrasonic machining an aperture in a workpiece" was invented by Zhigang Wang (South Windsor, Conn.), John D. Riehl (Hebron, Conn.), Robin H. Fernandez (East Haddam, Fla.), Andrzej E. Kuczek (Bristol, Conn.) and Gajawalli V. Srinivasan (South Windsor, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method is provided for machining a workpiece. During this machining method, an aperture is formed in the workpiece using a machining system. The machining system includes an ultrasonic machining device, a slurry delivery device and a controller. The forming of the aperture incl...