Hand-held power tool with improved vibration-damped handle

US7886839B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Karl Frauhammer · Echterdingen, DE
• Gerhard Meixner · Echterdingen, DE
• Heiko Roehm · Stuttgart, DE
• Willy Braun · Neustetten, DE
• Axel Kuhnle · Freiberg, DE
• Andreas Strasser · Graz, AT
• Ralph Dammertz · Rantoul, US
• Joachim Schadow · Stuttgart, DE
• Christian Koepf · Köngen, DE
• Juergen Lennartz · Esslingen am Neckar, DE

Key dates

• Filing date: Aug 12, 2009
• Grant date: Feb 15, 2011
• Expiry date: Aug 12, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B25D17/043
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

The hand-held power tool has a vibration-damped main handle. The hand-held power tool has a device for fastening the main handle to a main element configured so that when the main element moves out of a stationary position toward the main handle the main element swivels around at least one swivel axis so that it is guided along a trajectory that extends with a slant of at least 10° relative to a flat surface, which extends through a longitudinal tool axis and which has a surface normal oriented in a normal direction perpendicular to the longitudinal tool axis. As a result vibrations with a movement component perpendicular to the longitudinal tool axis are damped as well as vibrations that induce motion of the main element in the direction of the longitudinal tool axis toward the main handle.