EP 2181237 A1 20100505 - DRILL DEVICE HAVING A ROTARY-VIBRATORY DRIVE
Title (en)
DRILL DEVICE HAVING A ROTARY-VIBRATORY DRIVE
Title (de)
BOHRVORRICHTUNG MIT DREHSCHWINGUNGSANTRIEB
Title (fr)
DISPOSITIF DE FORAGE AYANT UN ENTRAÎNEMENT ROTATIF-VIBRATOIRE
Publication
Application
Priority
- NL 2008050511 W 20080724
- NL 1034180 A 20070724
- US 96179807 P 20070724
Abstract (en)
[origin: WO2009014444A1] The invention relates to a drill device comprising a vibratory drive connected to a drill string for providing a vibration to the drill string, a rotary drive connected to the drill string for providing a rotation to the drill string, characterized in that the vibratory drive is placed between the rotary drive and the drill string, and in that between the vibratory and rotary drives a coupling is placed, which coupling substantially prevents the passing on of vibrations from the vibratory drive to the rotary drive. Preferably the coupling has a first and a second coupling member that are placed coaxially with respect to each other, wherein the first coupling member comprises an internally toothed ring, wherein the second coupling member comprises a toothed wheel, wherein the teeth of the toothed wheel mesh with the toothed ring, wherein at least in a circumferential direction, a space between the teeth of the toothed ring is larger than the thickness of the teeth of the toothed wheel.
IPC 8 full level
E21B 6/00 (2006.01); E21B 7/24 (2006.01); E21B 17/046 (2006.01); F16D 3/06 (2006.01)
CPC (source: EP)
E21B 6/00 (2013.01); E21B 6/08 (2013.01); E21B 7/24 (2013.01); E21B 17/073 (2013.01); F16D 3/14 (2013.01); F16D 3/80 (2013.01); F16D 31/02 (2013.01)
Citation (search report)
See references of WO 2009014444A1
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 2009014444 A1 20090129; EP 2181237 A1 20100505; NL 1034180 C2 20090127
DOCDB simple family (application)
NL 2008050511 W 20080724; EP 08779057 A 20080724; NL 1034180 A 20070724