EP 3389934 A1 20181024 - PERCUSSIVE HANDHELD MACHINE TOOL
Title (en)
PERCUSSIVE HANDHELD MACHINE TOOL
Title (de)
SCHLAGENDE HANDWERKZEUGMASCHINE
Title (fr)
MACHINE-OUTIL PORTATIVE A PERCUSSION
Publication
Application
Priority
- EP 15200146 A 20151215
- EP 2016079894 W 20161206
Abstract (en)
[origin: WO2017102437A1] The invention relates to a striking hand-held machine tool (1) having a tool holder (2) for holding a striking tool (4) on a working shaft (3), an electric motor (8), and a striking mechanism (5). In the striking direction (6), the striking mechanism (5) has an exciter (13), a pneumatic chamber (16), a striker (14), an intermediate chamber (26) and a rivet snap (15) following one another. A closed channel (27) connects a first channel opening (30) in the pneumatic chamber (16) and a second channel opening (31) in the intermediate chamber (26). A non-return valve (29), which shuts off during an air flow from the first channel opening (30) to the second channel opening (31) and opens during an air flow from the second channel opening (31) to the first channel opening (30), is arranged in the channel (27). Arranged on the second channel opening (31) is a shut-off valve (28, 42), which is forced into a position closing the second channel opening (31) when the rivet snap (15) is in the working position.
IPC 8 full level
B25D 11/12 (2006.01); B25D 11/00 (2006.01); B25D 17/06 (2006.01)
CPC (source: EP US)
B25D 11/005 (2013.01 - EP US); B25D 11/125 (2013.01 - EP US); B25D 17/06 (2013.01 - EP US); B25D 2217/0019 (2013.01 - EP US); B25D 2250/035 (2013.01 - EP US); B25D 2250/131 (2013.01 - EP US); B25D 2250/185 (2013.01 - EP US); B25D 2250/231 (2013.01 - EP US); B25D 2250/345 (2013.01 - EP US); B25D 2250/365 (2013.01 - EP US)
Citation (search report)
See references of WO 2017102437A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3181299 A1 20170621; EP 3389934 A1 20181024; EP 3389934 B1 20190911; US 10675742 B2 20200609; US 2019039225 A1 20190207; WO 2017102437 A1 20170622
DOCDB simple family (application)
EP 15200146 A 20151215; EP 16809722 A 20161206; EP 2016079894 W 20161206; US 201616061397 A 20161206