EP 2523781 B1 20140402 - DRILLING AND/OR PERCUSSIVE HAMMER WITH COOLING BY FREE CONVECTION
Title (en)
DRILLING AND/OR PERCUSSIVE HAMMER WITH COOLING BY FREE CONVECTION
Title (de)
BOHR- UND/ODER SCHLAGHAMMER MIT FREIKONVEKTIONS-KÜHLUNG
Title (fr)
MARTEAU PERFORATEUR ET/OU À PERCUSSION AVEC REFROIDISSEMENT PAR CONVECTION LIBRE
Publication
Application
Priority
- DE 102010004723 A 20100115
- EP 2011000126 W 20110113
Abstract (en)
[origin: WO2011085986A1] The invention relates to a drill hammer and/or impact hammer having an internal combustion engine (1) and a hammer mechanism (5) that can be driven by the internal combustion engine (1) by means of a transmission (3). A part of the engine housing (7), the transmission housing (8), or the impact hammer mechanism housing (11) is enclosed by a cover (19). The cover (19) is spaced at a distance from the remainder of the machine, so that a gap (20) is present between the cover (19) and the remainder of the machine. Cooling air can flow into the gap (20) at the lower face of the cover (19) and flow back out via a flue (22) and an opening (23). The components beneath the cover (19) are thereby effectively cooled, even without an additional cooling air blower.
IPC 8 full level
B25D 17/20 (2006.01); B25D 9/10 (2006.01)
CPC (source: EP US)
B25D 9/10 (2013.01 - EP US); B25D 17/20 (2013.01 - EP US); B25D 2217/0061 (2013.01 - EP US); B25D 2250/121 (2013.01 - EP US); B25D 2250/245 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2011085986 A1 20110721; CN 102770246 A 20121107; CN 102770246 B 20150916; DE 102010004723 A1 20110721; EP 2523781 A1 20121121; EP 2523781 B1 20140402; US 2013118768 A1 20130516; US 9254559 B2 20160209
DOCDB simple family (application)
EP 2011000126 W 20110113; CN 201180005729 A 20110113; DE 102010004723 A 20100115; EP 11700998 A 20110113; US 201113520471 A 20110113