Patent · US Expired

Hand power tool

US7258349B2 · kind B2 · utility

19Cited by

14References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Karl Frauhammer · Echterdingen, DE
Heinz Schnerring · Waldenbuch, DE
Willy Braun · Neustetten, DE
Axel Kuhnle · Freiberg, DE

Key dates

Filing date	May 11, 2004
Grant date	Aug 21, 2007
Priority date	—
Expiry date	Jun 8, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T279/17777
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A hand power tool selected from the group consisting of a drill hammer and an impact hammer has an exchangeable tool holder, a guide pipe which receives the tool holder at its free end, a locking device arranged on the guide pipe and operative manually for fixing the tool holder on the guide pipe in a defined locking position assumed by the tool holder on the guide pipe, so that the locking position is arranged before a mounting position in a displacement direction of the tool holder, in which mounting position the tool holder is held unlocked on the guide pipe, the locking device being provided with means activatable by a release of the locking device and providing a displacement of the tool holder to the mounting position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.