EP 2619396 A1 20130731 - A ROCK DRILL BIT FOR PERCUSSIVE DRILLING AND A ROCK DRILL BIT BUTTON
Title (en)
A ROCK DRILL BIT FOR PERCUSSIVE DRILLING AND A ROCK DRILL BIT BUTTON
Title (de)
GESTEINSBOHRMEISSEL FÜR SCHLAGBOHRUNGEN UND GESTEINSBOHRMEISSELSTIFT
Title (fr)
TRÉPAN DE FORAGE DE ROCHE POUR FORAGE À PERCUSSION ET BOUTON DE TRÉPAN DE FORAGE DE ROCHE
Publication
Application
Priority
- EP 10178387 A 20100922
- EP 2011066323 W 20110920
- EP 11757880 A 20110920
Abstract (en)
[origin: EP2434086A1] A rock drill bit (30) for percussive drilling comprises a bit head configured to be attached at an end of a drill element (33) of a drilling assembly and having a diameter larger than that of said drill element. The bit head has at a front end (38) as seen in the intended drilling direction a plurality of buttons (41) distributed over said bit head and configured to engage material to be crushed. At least one of said buttons is allowed to rotate about its own symmetry axis.
IPC 8 full level
E21B 10/36 (2006.01)
CPC (source: EP KR US)
E21B 10/36 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2012038428A1
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 2434086 A1 20120328; EP 2434086 B1 20130515; AU 2011304382 A1 20130411; AU 2011304382 B2 20150115; AU 2011304461 A1 20130411; AU 2011304461 B2 20150903; AU 2015238819 A1 20151029; BR 112013006621 A2 20160621; BR 112013006623 A2 20160628; CA 2811674 A1 20120329; CA 2812600 A1 20120329; CN 103261561 A 20130821; CN 103339339 A 20131002; EP 2619396 A1 20130731; KR 20140005880 A 20140115; KR 20140009149 A 20140122; RU 2013118265 A 20141027; RU 2013118269 A 20141027; RU 2571783 C2 20151220; US 2013180784 A1 20130718; US 2013180785 A1 20130718; WO 2012038342 A1 20120329; WO 2012038428 A1 20120329; ZA 201302143 B 20140925
DOCDB simple family (application)
EP 10178387 A 20100922; AU 2011304382 A 20110920; AU 2011304461 A 20110916; AU 2015238819 A 20151007; BR 112013006621 A 20110916; BR 112013006623 A 20110920; CA 2811674 A 20110916; CA 2812600 A 20110920; CN 201180046041 A 20110916; CN 201180046043 A 20110920; EP 11757880 A 20110920; EP 2011066114 W 20110916; EP 2011066323 W 20110920; KR 20137010145 A 20110916; KR 20137010147 A 20110920; RU 2013118265 A 20110916; RU 2013118269 A 20110920; US 201113825416 A 20110916; US 201113825533 A 20110920; ZA 201302143 A 20130320