EP 2668341 A2 20131204 - DRILLING DEVICE FOR PERCUSSION OR ROTARY PERCUSSION DRILLING HAVING A COUPLING SLEEVE
Title (en)
DRILLING DEVICE FOR PERCUSSION OR ROTARY PERCUSSION DRILLING HAVING A COUPLING SLEEVE
Title (de)
BOHRVORRICHTUNG FÜR SCHLAG- ODER DREHSCHLAGBOHREN MIT EINER ANSCHLUSSMUFFE
Title (fr)
DISPOSITIF DE FORAGE POUR FORAGE À PERCUSSION OU FORAGE ROTATIF À PERCUSSION COMPRENANT UNE GAINE D'ACCOUPLEMENT
Publication
Application
Priority
- DE 102011009632 A 20110127
- DE 102011120572 A 20111207
- GB 2012050148 W 20120124
Abstract (en)
[origin: WO2012101433A2] For the purpose of producing boreholes (2) in the combined drilling and setting process, a tube spile (4), which subsequently remains in the borehole (2), is driven into the latter via a coupling sleeve (6). Said coupling sleeve (6) is constructed as a combined thrusting, striking and ejecting adapter (10), and therefore ensures both the propulsion of the tube spile and the transmission of the power of the drilling machine to the drill rod (5) and thereby the drill bit (3). Said drill bit (3) is secured on the drill rod (5), or rather its front end (37), via an axial fixing system (55) against unintended detachment.
CPC (source: EP)
E21B 17/03 (2013.01); E21D 21/0033 (2013.01); E21D 21/0053 (2016.01)
Citation (search report)
See references of WO 2012101433A2
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)
DE 102011120572 A1 20120802; EP 2668341 A2 20131204; TW 201241298 A 20121016; TW I591251 B 20170711; WO 2012101433 A2 20120802; WO 2012101433 A3 20131128
DOCDB simple family (application)
DE 102011120572 A 20111207; EP 12705152 A 20120124; GB 2012050148 W 20120124; TW 101102928 A 20120130