Expansion dowel

US6179536A · kind A · utility

Assignee

• Hilti Aktiengesellschaft · LI

Inventors

• Thomas Belz · Munich, DE
• Michael Werner · Hersbruck, DE

Key dates

• Filing date: Oct 14, 1999
• Grant date: Jan 30, 2001
• Expiry date: Oct 14, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B13/0858
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An expansion dowel, including an expansion sleeve (2) having a rear section (3) provided with an inner thread (4), an opposite expansion section (5) with a plurality of expansion tabs (6) separated by axial slots, and a stepped bore (9,10) having in, the expansion section (5), a smaller inner diameter (s) than in the rear section (3) and a circumferential annular shoulder (11) formed in a transitional region between the rear and the expansion sections (3,5) and facing substantial toward a rear end of the expansion sleeve (2), and an expansion member (12) provided at a front end of the expansion sleeve (2) projecting beyond the front, the expansion member (12) projecting beyond the front end of the expansion sleeve (2), widening substantially conically in a setting direction (5), and having a length (l) larger than a length (k) of the expansion section (5) of the expansion sleeve (2).