EP 2171210 A1 20100407 - METHOD AND DEVICE FOR DRILLING A HOLE IN GROUND OR ROCK MATERIAL AND FORMING A BRACE
Title (en)
METHOD AND DEVICE FOR DRILLING A HOLE IN GROUND OR ROCK MATERIAL AND FORMING A BRACE
Title (de)
VERFAHREN UND VORRICHTUNG ZUM BOHREN EINES LOCHES IN BODEN- ODER GESTEINSMATERIAL UND AUSBILDEN EINER VERANKERUNG
Title (fr)
PROCÉDÉ ET DISPOSITIF POUR PERCER UN TROU DANS LE SOL OU DANS UN MATÉRIAU ROCHEUX ET POUR FORMER UN ANCRAGE
Publication
Application
Priority
- AT 2008000219 W 20080617
- AT 3812007 U 20070619
Abstract (en)
[origin: CA2691198A1] Disclosed are a method and a device for drilling, particularly percussion drilling or rotationally drilling, a hole (2) in ground or rock material and forming a brace in said hole (2). According to the invention, a borehole (2) is formed by a bit (7) that is mounted on drilling rods (1), and a brace is formed by at least one expanding element (12) that is mounted along the circumference of the drilling rods (1) and is brought, especially by expanding the same, into a position in which the expanding element (12) penetrates or rests against the material (22) surrounding the borehole (2), thus allowing for reliable bracing immediately after creating a borehole (2).
IPC 8 full level
E21B 10/36 (2006.01); E21D 21/00 (2006.01)
CPC (source: EP US)
E21B 10/36 (2013.01 - EP US); E21D 21/0033 (2013.01 - EP US)
Citation (search report)
See references of WO 2008154669A1
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)
AT 10289 U1 20081215; CA 2691198 A1 20081224; EP 2171210 A1 20100407; US 2010282513 A1 20101111; WO 2008154669 A1 20081224
DOCDB simple family (application)
AT 3812007 U 20070619; AT 2008000219 W 20080617; CA 2691198 A 20080617; EP 08756829 A 20080617; US 66381108 A 20080617