US Patent Issued to The Boeing on June 17 for "Methods of ultrasonic drilling for forming perforations in composite materials" (Washington Inventor)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,330,258, issued on June 17, was assigned to The Boeing Co. (Arlington, Va.).

"Methods of ultrasonic drilling for forming perforations in composite materials" was invented by Weidong Song (Woodinville, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods of ultrasonic drilling may be used to form perforated sheets by forming holes through a workpiece using a needle or needle array operatively coupled to an ultrasonic actuator. The needle is brought to repeatedly contact the surface of the workpiece at an ultrasonic operating frequency, thereby forming the hole through the workpiece. Such steps are repeated to form a plurality of holes in the work...