Dowel

US6238128A · kind A · utility

Assignee

• Hilti Aktiengesellschaft · LI

Inventors

• Werner Kaibach · Buchloe, DE
• Stefan Raber · Kaufering, DE
• Hans-Jurgen Negele · Schongau, DE
• Alois Kolbl · Buchloe, DE
• Ulrich Genschmer · Haslach im Kinzigtal, DE

Key dates

• Filing date: Apr 23, 1999
• Grant date: May 29, 2001
• Expiry date: Apr 23, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T403/7069
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A dowel including an anchor rod (2) provided at front, in a setting direction, end with a head portion (4) widening in the setting direction, and a sleeve (5) having a through-bore and axially displaceable along the anchor rod, with the sleeve (5) having, at its end adjacent to the head portion (4) an expansion region (6) formed by a plurality of expansion tabs (7) separated from each other by substantially axially extending slots (8) and radially expandable upon a relative displacement of the sleeve (5) and the anchor rod (2), and a sleeve section adjoining the expansion region (6) and having, in its rear end region (10), a larger diameter (G) than in its front end region (12) adjoining the expansion region (6), with the sleeve section having a narrowing intermediate region (11) extending between the rear end region (10) and the front end region (12) and having a smallest outer diameter (M) which is smaller than an outer diameter (F) in the front end region (12).