US Patent Issued to ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS on Aug. 11 for "Indexable drilling tool" (Chinese Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,703,029, issued on Aug. 11, was assigned to ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS Co. LTD. (Hunan, Cameroon).

"Indexable drilling tool" was invented by Aisheng Jiang (Hunan, China), Xun Li (Hunan, China), Aimin Tang (Hunan, China) and Junbo Xue (Hunan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An indexable drilling tool includes a cutter body, an outer blade and an inner blade. The inner blade is surrounded by a first upper surface, a first lower surface and a first side surface. The first upper surface intersects with the first side surface to form multiple identical inner cutting edges. When drilling, a cutting area of the inner cutting ed...