MUMBAI, India, Aug. 31 -- Intellectual Property India has published a patent application (202517108818 A) filed by Arnold Umformtechnik Gmbh & Co. on November 10, 2025, for Flow Drilling Screw, Arrangement Having A Flow Drilling Screw, And Method For Connecting At Least Two Workpieces.
Inventors include Schmetzer, Nadine; Miller, Heiko; Quirin, Oliver Application Number; and Hein, Tobias.
The application for the patent was published on August 28, 2026, under issue no. 35/2026.
Abstract: The invention relates to a flow drilling screw having a shank and having a screw head that has a drive formation, wherein: the shank is equipped in parts with a tapping thread and with a thread-free drilling tip; the drilling tip has a polygonal cross-section at least in parts; the polygonal cross-section has a plurality of convex first peripheral portions having a large radius of curvature and a plurality of convex second peripheral portions having a small radius of curvature; each second peripheral portion having a small radius of curvature is situated between two first peripheral portions having a large radius of curvature; and a cross-sectional enlargement of the tip proceeding from the free end of the tip is more pronounced in a first length region extending from the free end of the tip as far as 0.2 times to 0.4 times the length, in particular as far as one third of the length, than over the further course of the tip as far as the tapping thread.
Disclaimer: Curated by HT Syndication.
