Patent · US Active

Hand machine tool

US8104544B2 · kind B2 · utility

10Cited by

25References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andre Ullrich · Echterdingen, DE
Tobias Herr · Stuttgart, DE

Key dates

Filing date	Feb 7, 2008
Grant date	Jan 31, 2012
Priority date	—
Expiry date	Mar 29, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/371
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a hand machine tool, in particular, a hammer drill or chisel, having a gearbox housing and a gearbox unit with a switching device. The switching device includes a switching spring and an operating unit which may be mounted in the gearbox housing with a transfer element. According to the invention, the switching spring has a housing region provided for housing the transfer element of the assembled operating unit, on assembly of the gearbox housing and the gearbox unit.

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