EP 2739810 A2 20140611 - DRILLING TOOL FOR LAYING A TUBE IN THE GROUND
Title (en)
DRILLING TOOL FOR LAYING A TUBE IN THE GROUND
Title (de)
BOHRWERKZEUG ZUM VERLEGEN EINES ROHRES IM BODEN
Title (fr)
OUTIL DE FORAGE PERMETTANT DE DISPOSER UN TUYAU DANS LE SOL
Publication
Application
Priority
- CH 12892011 A 20110802
- EP 2012064869 W 20120730
Abstract (en)
[origin: WO2013017560A2] A drilling tool for laying a tube (3) around a buried elongated element (1), comprising a drilling head (2) guided by the buried element (1), moving under the action of a pressurized fluid, from a first free end (14) of the buried element towards a second end (13) of the buried element (1), and pulling the tube (3), characterized in that the drilling tool comprises pressurization means (4) attached to the first end (14) of the buried element (1), able to slide into the tube (3) pulled by the drilling head (2) and able to create a pushing force on the drilling head (2) by the pressurization with said pressurized fluid of a pressure chamber (42) arranged between the drilling head (2) and the pressurization means (4).
IPC 8 full level
CPC (source: EP US)
E21B 4/06 (2013.01 - US); E21B 4/14 (2013.01 - EP US); E21B 4/145 (2013.01 - US); E21B 7/046 (2013.01 - US); E21B 7/205 (2013.01 - EP US); E21B 7/28 (2013.01 - US); E21B 7/30 (2013.01 - US); H02G 1/08 (2013.01 - US)
Citation (search report)
See references of WO 2013017560A2
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)
WO 2013017560 A2 20130207; WO 2013017560 A3 20131114; CA 2839804 A1 20130207; CN 103717823 A 20140409; EP 2739810 A2 20140611; US 2014305706 A1 20141016
DOCDB simple family (application)
EP 2012064869 W 20120730; CA 2839804 A 20120730; CN 201280036517 A 20120730; EP 12745663 A 20120730; US 201214236554 A 20120730