Method of manufacturing an expansion sleeve

US6755747B2 · kind B2 · utility

Assignee

• Hilti Aktiengesellschaft · LI

Inventors

• Jurgen Wieser · Kaufering, DE
• Claudia Zimmerer · Augsburg, DE
• Heinz Bisping · Munich, DE
• Alois Koelbl · Buchloe, DE
• Erich Daigeler · Buchloe, DE

Key dates

• Filing date: Aug 7, 2002
• Grant date: Jun 29, 2004
• Expiry date: Aug 7, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B21K1/56
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method of manufacturing of an expansion sleeve including providing a sleeve blank having axially extending material weaknesses (9), and forming the longitudinal slots (5) by tearing open the material weaknesses (9) by substantially radially expanding same.