Manually operable tool for drilling and/or removing material in brittle and/or low ductile material

US5806609A · kind A · utility

Assignee

• Hilti Aktiengesellschaft · LI

Inventors

• Maximilian Stock · Azmoos, CH
• Werner Kaibach · Buchloe, DE
• Reinhard Schulz · Hannover, DE
• Hans-Werner Bongers-Ambrosius · Munich, DE
• Ralf Ludwig · Preußisch Oldendorf, DE
• Hanspeter Schad · Grabs, CH
• Edwin Schweizer · Balzers, LI

Key dates

• Filing date: Mar 25, 1996
• Grant date: Sep 15, 1998
• Expiry date: Mar 25, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B25D2211/068
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A manually operable tool, such as a hammer drill, for drilling and/or removing material in at least one of brittle material and low ductile material, has a continuously rotatable chuck (8) and a motor driven striking mechanism (1) for transmitting impulse-like blows to a tool bit (9) held in the chuck (8). The tool includes members (5) for transmitting impulse-like blows composed of superimposed axially-directed blows and torsional blows to the tool bit (9) in the chuck for forming drilling blows. Further, an adaptor can be provided for attachment to the hammer drill containing the members (5) for affording the superimposed blows.