EP 1425138 A1 20040609 - HAMMER DRILL AND/OR PERCUSSION HAMMER WITH NO-LOAD OPERATION CONTROL THAT DEPENDS ON APPLICATION PRESSURE
Title (en)
HAMMER DRILL AND/OR PERCUSSION HAMMER WITH NO-LOAD OPERATION CONTROL THAT DEPENDS ON APPLICATION PRESSURE
Title (de)
BOHR- UND/ODER SCHLAGHAMMER MIT ANPRESSDRUCKABHÄNGIGER LEERLAUFSTEUERUNG
Title (fr)
MARTEAU PERFORATEUR ET/OU A PERCUSSION A COMMANDE DE RALENTI DEPENDANT DE LA PRESSION APPLIQUEE
Publication
Application
Priority
- DE 10145464 A 20010914
- EP 0210253 W 20020912
Abstract (en)
[origin: WO03024672A1] A percussion hammer drill and/or percussion hammer that can be guided by a handgrip (2) comprises a pneumatic spring striking mechanism with a reciprocating drive piston (11) and with a percussion piston (12) that can be operated by the drive piston. A cavity (13) for accommodating a pneumatic spring is provided between the drive piston (11) and the percussion piston (12). The cavity (13) can be connected to the surrounding area via a no-load operation channel (23, 24, 25) in order to achieve a no-load operation. To this end, a valve (19) is situated inside the no-load operation channel and can be controlled according to an application force that can be applied to the handgrip (2) by the operator.
IPC 1-7
IPC 8 full level
B23B 45/16 (2006.01); B25D 11/00 (2006.01); B25D 16/00 (2006.01); B25D 17/04 (2006.01); B25F 5/00 (2006.01)
CPC (source: EP US)
B25D 11/005 (2013.01 - EP US); B25D 16/00 (2013.01 - EP US); B25D 17/043 (2013.01 - EP US); B25D 2211/003 (2013.01 - EP US); B25D 2211/068 (2013.01 - EP US); B25D 2250/035 (2013.01 - EP US); B25D 2250/131 (2013.01 - EP US); B25D 2250/221 (2013.01 - EP US)
Citation (search report)
See references of WO 03024672A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 03024672 A1 20030327; DE 10145464 A1 20030410; DE 10145464 C2 20030828; DE 50203692 D1 20050825; EP 1425138 A1 20040609; EP 1425138 B1 20050720; ES 2243767 T3 20051201; JP 2005502488 A 20050127; JP 4243539 B2 20090325; US 2004177981 A1 20040916; US 6913088 B2 20050705
DOCDB simple family (application)
EP 0210253 W 20020912; DE 10145464 A 20010914; DE 50203692 T 20020912; EP 02777083 A 20020912; ES 02777083 T 20020912; JP 2003528359 A 20020912; US 48567304 A 20040130