Patent · US Active

Hand-held power tool for percussively driven tool attachments

US8464805B2 · kind B2 · utility

12Cited by

15References

23Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Otto Baumann · Echterdingen, DE
Hardy Schmid · Stuttgart, DE
Tobias Herr · Stuttgart, DE

Key dates

Filing date	Nov 19, 2008
Grant date	Jun 18, 2013
Priority date	—
Expiry date	Sep 19, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/175
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a hand-held power tool for predominantly percussively driven tool attachments, in particular hammer drills and/or chisel-action hammers. The power tool includes a percussion axis and an intermediate shaft that is parallel to the percussion axis in which a first stroke generating device having a first stroke element for a percussion drive is arranged in or on the intermediate shaft and can be driven by the intermediate shaft. Additionally, at least one other second stroke generating device having at least one second stroke element is provided for driving a counter oscillator. A phase displacement that is different from zero and that is unequal to 180° takes place between a movement of the first stroke element and a movement of at least one second stroke element.

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