Global Patent Index - EP 2145074 A1

EP 2145074 A1 20100120 - DEVICE FOR RELEASABLY CONNECTING A CORE DRILL BIT TO A DRILL STRING

Title (en)

DEVICE FOR RELEASABLY CONNECTING A CORE DRILL BIT TO A DRILL STRING

Title (de)

VORRICHTUNG ZUM LÖSBAREN VERBINDEN EINER BOHRKRONE MIT EINEM BOHRGESTÄNGE

Title (fr)

DISPOSITIF DE CONNEXION AMOVIBLE D'UNE COURONNE DE FORAGE AVEC UN TRAIN DE TIGES

Publication

EP 2145074 A1 20100120 (DE)

Application

EP 08733244 A 20080418

Priority

  • AT 2008000141 W 20080418
  • AT 6092007 A 20070419

Abstract (en)

[origin: WO2008128267A1] The invention relates to a device for releasably connecting a core drill bit (2) to a drill string (3). Said device comprises an adapter (5) which can be connected to the drill string (3) on an end (6) facing away from the core drill bit (2) or which is configured to be integral with a drill string end (8). A helical groove (17) extends along the outer periphery of the adapter (5) at an end (7) of the adapter (5) facing the core drill bit (2). Said groove can be engaged with and disengaged from a coupling element (15) arranged in a recess (10) of the core drill bit (2) to receive the adapter (5), the coupling element (15) being likewise helical and being insertable into the recess (10) of the core drill bit (2) as a separate part.

IPC 8 full level

E21B 17/04 (2006.01); F16L 15/08 (2006.01)

CPC (source: EP)

E21B 17/04 (2013.01)

Citation (search report)

See references of WO 2008128267A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

WO 2008128267 A1 20081030; AT 505158 A4 20081115; AT 505158 B1 20081115; EP 2145074 A1 20100120

DOCDB simple family (application)

AT 2008000141 W 20080418; AT 6092007 A 20070419; EP 08733244 A 20080418