Control method and hand-held power tool

US8333251B2 · kind B2 · utility

Assignee

• Hilti Aktiengesellschaft · LI

Inventors

• Holger Cecchin · Puchheim, DE
• Erwin Manschitz · Germering, DE
• Germar Meiendres · Landsberg, DE
• Franz Moessnang · Landsberg, DE
• Stefan Hammerstingl · Munich, DE

Key dates

• Filing date: Jan 28, 2010
• Grant date: Dec 18, 2012
• Expiry date: Jan 24, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B25D2250/221
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A pneumatically striking hand-held power tool is controlled by the following steps. An acceleration (a) along a striking axis (8) of the hand-held power tool (1) is detected. A driving power is reduced if the detected acceleration (a) is greater than a threshold value (A), the threshold value (A) being selected to be greater than maximum acceleration values (a1, a2) that occur on a workpiece during the striking operation of the hand-held power tool (1).