EP 2855824 A2 20150408 - SYMMETRICAL BIT FOR DIRECTIONAL DRILLING TOOL
Title (en)
SYMMETRICAL BIT FOR DIRECTIONAL DRILLING TOOL
Title (de)
SYMMETRISCHE BOHRKRONE FÜR RICHTBOHRWERKZEUG
Title (fr)
TRÉPAN SYMÉTRIQUE POUR OUTIL DE FORAGE DIRECTIONNEL
Publication
Application
Priority
- IE S20120176 A 20120405
- EP 2013057046 W 20130403
Abstract (en)
[origin: WO2013150078A2] The present invention relates to a percussion drill bit (1) for directional drilling tools (10). The drill bit comprises a head portion (2) formed with an axially extending shank (3). The drill bit also comprises engagement means (4) on the shank engageable with complementary engagement means formed on a drive chuck whereby rotational drive from the chuck may be transmitted to the shank. The head portion (2) of the drill bit is formed with a plurality of slant faces (5) arranged symmetrically about the head portion.
IPC 8 full level
E21B 4/06 (2006.01); E21B 7/06 (2006.01); E21B 10/36 (2006.01)
CPC (source: EP US)
E21B 4/06 (2013.01 - EP US); E21B 7/067 (2013.01 - EP US); E21B 10/36 (2013.01 - EP US)
Citation (search report)
See references of WO 2013150078A2
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 2013150078 A2 20131010; WO 2013150078 A3 20140530; CA 2869019 A1 20131010; EP 2855824 A2 20150408; IE S20120176 A2 20130327; IE S86164 B2 20130327; US 2015176334 A1 20150625
DOCDB simple family (application)
EP 2013057046 W 20130403; CA 2869019 A 20130403; EP 13716753 A 20130403; IE S20120176 A 20120405; US 201314390478 A 20130403