Patent · US Active

Hand-held power tool

US8672050B2 · kind B2 · utility

1Cited by

13References

23Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Otto Baumann · Echterdingen, DE
Christian Wiedemann · Grafing, DE
Hardy Schmid · Stuttgart, DE
Holger Frank · Pfullingen, DE
Frank Mueller · Wiehl, DE
Roger A. Hahn · Bad Liebenzell, DE

Key dates

Filing date	Sep 3, 2008
Grant date	Mar 18, 2014
Priority date	—
Expiry date	Jun 6, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/331
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a hand-held machine tool, particularly to a drill hammer and/or chisel hammer, having a hand-held machine tool housing and a transmission chamber with at least one transmission element arranged inside the hand-held machine tool housing. According to the invention, the hand-held machine tool includes a pressure equalization unit, provided for equalizing pressure in the transmission housing and serving at least partially for supporting the transmission element.

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