Title:
MANUAL MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO2002043928
Kind Code:
A3
Abstract:
The invention relates to a manual machine tool, especially a hammer drill, comprising a driveable drive means (12) arranged in a housing (10) and a mechanical percussion mechanism (14) for driving a tool (16) in a tool receiving element (18) in a percussive manner. Said percussion mechanism comprises a percussor (20) which can be driven in its percussion movement by means of a driver unit (22) comprising at least one ring-shaped cam (24, 26) having bumps and dents which are oriented in the axial direction towards the tool. The inventive machine tool also comprises a tracer unit (28) which interacts with the percussor (20). Said tracer unit can be brought into interaction with the bumps and dents of the cam (24, 26) by means of at least one tracing element (30). The tracer unit (28) comprises at least two tracing elements (30) which can be brought into interaction with the cam (24, 26).
Inventors:
HECHT JOACHIM (DE)
Application Number:
PCT/DE2001/004409
Publication Date:
April 03, 2003
Filing Date:
November 22, 2001
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
HECHT JOACHIM (DE)
HECHT JOACHIM (DE)
International Classes:
B23B45/16; B25D11/00; B25D11/10; (IPC1-7): B25D11/10
Foreign References:
| US5427188A | 1995-06-27 | |||
| US2850739A | 1958-09-09 | |||
| DE810140C | 1951-08-06 |
Download PDF: