Hand held power tool

US6666283B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Karl Frauhammer · Echterdingen, DE
• Frank Mueller · Wiehl, DE
• Karl Treyz · Leonberg, DE
• Heinz Schnerring · Waldenbuch, DE
• Joerg Friedrich · Echterdingen, DE
• Andreas Strasser · Graz, AT
• Hubert Steinke · Echterdingen, DE

Key dates

• Filing date: Jan 16, 2001
• Grant date: Dec 23, 2003
• Expiry date: Apr 19, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B25F5/00
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A hand power tool has at least one safety coupling arranged in a drive train, the safety coupling having at least two coupling elements for transmitting a torque around a rotary axis, at least one arresting element which is spring loaded and held in a guiding passage for connecting the coupling elements with one another, a guiding element, a spring providing spring-loading of the arresting element and supported in direction of the arresting element by the guiding element, the guiding element being non rotatably guided relative to an axis extending parallel to the rotary axis by guiding surfaces in the guiding passage, and the arresting element unlatching and keeping in contact with a surface toward which the arresting element is urged by the spring in response to exceeding of predetermined torque.