Patent · US Active

Hand-held tool with a counter-vibration device

US8245791B2 · kind B2 · utility

9Cited by

2References

17Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Joerg Kriedel · Neustadt, DE
Richard Engel · Bad Schandau, DE
Otto Baumann · Echterdingen, DE
Hardy Schmid · Stuttgart, DE
Holger Ruebsaamen · Stuttgart, DE
Mario Patzig · Zittau, DE

Key dates

Filing date	Mar 16, 2010
Grant date	Aug 21, 2012
Priority date	—
Expiry date	Jul 14, 2030

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2217/0088
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a hand-held tool, in particular a rotary hammer, a percussion hammer, or a sabre saw. The hand-held tool is equipped with a drive unit and a stroke-generating element; the drive unit is embodied to move the stroke-generating element in a reciprocating fashion along a translation axis. The hand-held tool has at least one counterweight; the counterweight is operatively connected to the drive unit in such a way that it is possible to at least partially compensate for forces at least indirectly caused by the reciprocating motion. According to the invention, the counterweight in the hand-held tool is supported so that it is able to move, in particular to reciprocate, coaxial or parallel to the translation axis.

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