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Current content: 158 678 210 patent documents

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139 196 new documents added

884 989 documents amended

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EP 2011958 B1 20090909 - Auger

Title (en)

Auger

Title (de)

Erdbohrer

Title (fr)

Tarière

Publication

EP 2011958 B1 20090909 (DE)

Application

EP 07013318 A 20070706

Priority

EP 07013318 A 20070706

Abstract (en)

[origin: EP2011958A1] A soil shaft-cutting tool has a shaft (2) with a coaxial central axis (1) with a cutter for the removal of soil in the lower part (12) of the shaft. The upper part of the shaft has a connector (6) to the shaft drive. The lower part of the shaft has cutter blades connected to a helix (21,22). The distance between the cutter and the drill axis decreases with increasing height of the cutting edge along the axis.

IPC 8 full level

E21B 7/20 (2006.01); E21B 10/44 (2006.01)

CPC (source: EP)

E21B 7/201 (2013.01); E21B 10/44 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 2011958 A1 20090107; EP 2011958 B1 20090909; AT E442511 T1 20090915; DE 502007001500 D1 20091022; ES 2331435 T3 20100104

DOCDB simple family (application)

EP 07013318 A 20070706; AT 07013318 T 20070706; DE 502007001500 T 20070706; ES 07013318 T 20070706