EP 3383587 A1 20181010 - ROCK BREAKING DEVICE
Title (en)
ROCK BREAKING DEVICE
Title (de)
GESTEINSBRUCHVORRICHTUNG
Title (fr)
DISPOSITIF BRISE ROCHES
Publication
Application
Priority
- FR 1561749 A 20151202
- EP 2016079349 W 20161130
Abstract (en)
[origin: WO2017093361A1] The invention concerns a rock breaking device (10) comprising a striking cell (12) having at least one actuation chamber (14), a striking piston (16), and a hydraulic circuit comprising a hydraulic supply source having a High Pressure circuit (17) and a Low Pressure circuit (18), and an actuator (20) configured to connect the High Pressure circuit (17) or the Low Pressure circuit (18) to the actuation chamber (14) so as to move the piston in translation in the striking cell (12) in a normal movement area of which the limits are variable depending on the pressure difference between the High Pressure circuit (17) and the Low Pressure circuit (18), the striking cell (12) comprising depressurising means configured to control the establishment of hydraulic communication between the High Pressure circuit (17) and the Low Pressure circuit (18) when the striking piston (16) exits a predefined movement area.
IPC 8 full level
B25D 9/12 (2006.01); B25D 9/18 (2006.01); B25D 9/26 (2006.01); B25D 17/24 (2006.01)
CPC (source: EP KR US)
B25D 9/12 (2013.01 - EP KR US); B25D 9/18 (2013.01 - EP KR US); B25D 9/26 (2013.01 - EP KR US); B25D 17/245 (2013.01 - EP KR US); E02F 3/966 (2013.01 - KR); E02F 9/2221 (2013.01 - KR); E02F 9/2271 (2013.01 - KR); B25D 2217/0023 (2013.01 - EP KR US); B25D 2250/195 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2017093361A1
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)
WO 2017093361 A1 20170608; CN 108367418 A 20180803; CN 108367418 B 20210108; EP 3383587 A1 20181010; FR 3044572 A1 20170609; FR 3044572 B1 20171229; KR 20180090844 A 20180813; US 10974379 B2 20210413; US 2018345470 A1 20181206
DOCDB simple family (application)
EP 2016079349 W 20161130; CN 201680069514 A 20161130; EP 16805096 A 20161130; FR 1561749 A 20151202; KR 20187018663 A 20161130; US 201615778884 A 20161130