System for securing an anchor in a mineral substrate

US12234851B2 · kind B2 · utility

Assignee

• Ludwig Hettich Holding GmbH & Co. KG · DE

Inventors

• Andreas Heck · Hamberg, DE
• Ulrich Hettich · Schramberg, DE

Key dates

• Filing date: Jul 31, 2020
• Grant date: Feb 25, 2025
• Expiry date: Sep 22, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B25/00
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Disclosed herein is a system for fastening an anchor in a borehole in a mineral substrate, in particular concrete, mortar or masonry, comprising an anchor having a core section and a thread section, and a grooving tool for grooving an internal thread in the borehole, the grooving tool comprising the following: a base body having a leading and a trailing end, a force application device being provided, via which a torque for screwing the grooving tool into the borehole and for grooving the thread is transmitted to the base body, the base body having an outer surface on which a grooving thread is formed, which is suitable for grooving the internal thread into the wall of the borehole, the following applying to the ratio of the length heff of the thread section of the anchor and the nominal diameter db of the borehole: heff/db≥10.0, preferably ≥12.0, particularly preferably ≥15.0, and in particular ≥30.0.