EP 2876246 B1 20190501 - Auger drive for drilling into soil
Title (en)
Auger drive for drilling into soil
Title (de)
Bohrschnecke zum Erdbohren
Title (fr)
Tarière pour le forage terrestre
Publication
Application
Priority
EP 13193903 A 20131121
Abstract (en)
[origin: CN104653110A] The invention relates to an auger (10) for Erdbohren with a tubular and to a vertical axis (12) coaxial center shaft (14) and with at least one drill helix (20) from a metal sheet, wherein the drill helix spirally extends around the center shaft and secured thereto, in particular welded, is. According to the invention it is provided that for radial discharge of ground material at the drill helix abgebohrtem a deflection surface (32) is provided, which from 90 DEG different Ableitwinkel (38) in a vertical section to the vertical axis.
IPC 8 full level
E21B 7/00 (2006.01); E21B 10/44 (2006.01)
CPC (source: CN EP)
E21B 7/005 (2013.01 - EP); E21B 10/44 (2013.01 - CN EP); E21B 12/06 (2013.01 - CN)
Citation (examination)
US 2981403 A 19610425 - GOODRICH ROSS H
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)
EP 2876246 A1 20150527; EP 2876246 B1 20190501; CN 104653110 A 20150527; CN 104653110 B 20170620
DOCDB simple family (application)
EP 13193903 A 20131121; CN 201410670151 A 20141121