EP 3336301 B1 20230913 - DRILLING APPARATUS AND METHOD FOR PRODUCING A BOREHOLE
Title (en)
DRILLING APPARATUS AND METHOD FOR PRODUCING A BOREHOLE
Title (de)
DREHBOHRWERKZEUG UND VERFAHREN ZUM ERSTELLEN EINER BOHRUNG
Title (fr)
PERFORATRICE ROTATIVE ET PROCÉDÉ DE FABRICATION D'UN ALÉSAGE
Publication
Application
Priority
EP 16205044 A 20161219
Abstract (en)
[origin: WO2018114230A1] The invention relates to a rotary drilling tool and to a method for creating a borehole in the ground, comprising a main body, a removal apparatus, which has at least one hammer unit, which comprises an axially reversingly driven hammer element, and a lead-away line for leading away removed ground material and drilling suspension. According to the invention, a pumping apparatus is arranged on the main body along the lead-away line and the pumping apparatus is designed for pumping away the removed ground material with drilling suspension through the lead-away line.
IPC 8 full level
E21B 4/14 (2006.01); E21B 4/16 (2006.01); E21B 6/00 (2006.01); E21B 10/60 (2006.01)
CPC (source: EP KR US)
E21B 4/14 (2013.01 - KR US); E21B 4/16 (2013.01 - EP KR); E21B 6/00 (2013.01 - EP KR); E21B 6/04 (2013.01 - US); E21B 10/02 (2013.01 - US); E21B 10/60 (2013.01 - EP KR US)
Citation (examination)
- EP 2592214 A1 20130515 - CHUAN HOME MACHINERY CO LTD [TW]
- EP 2703596 A1 20140305 - BAUER MASCHINEN GMBH [DE]
- US 4790391 A 19881213 - HAMAMURA HIROYUKI [JP], et al
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)
EP 3336301 A1 20180620; EP 3336301 B1 20230913; CN 110062834 A 20190726; CN 110062834 B 20210928; KR 102328874 B1 20211118; KR 20190085034 A 20190717; US 10934779 B2 20210302; US 2020102790 A1 20200402; WO 2018114230 A1 20180628
DOCDB simple family (application)
EP 16205044 A 20161219; CN 201780078760 A 20171127; EP 2017080474 W 20171127; KR 20197016971 A 20171127; US 201716469275 A 20171127