ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,384, issued on Aug. 26, was assigned to DALIAN UNIVERSITY OF TECHNOLOGY (Dalian, China).
"Hole making tool for aramid fiber-reinforced plastic and design method thereof" was invented by Fuji Wang (Liaoning, China), Hongwei Zhao (Liaoning, China), Rao Fu (Liaoning, China), Meng Zhao (Liaoning, China), Dekun Yin (Liaoning, China) and Zhenyuan Jia (Liaoning, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention belongs to the technical field of composite material processing, and relates to a hole making tool for aramid fiber-reinforced plastic and a design method thereof. The drill bit has a step reversed point angle structure, whi...