EP 3199709 B1 20190807 - APPARATUS AND METHOD FOR DRILLING ANNULAR CAVITIES
Title (en)
APPARATUS AND METHOD FOR DRILLING ANNULAR CAVITIES
Title (de)
VORRICHTUNG UND VERFAHREN ZUM BOHREN RINGFÖRMIGER HOHLRÄUME
Title (fr)
APPAREIL ET PROCÉDÉ POUR FORER DES CAVITÉS ANNULAIRES
Publication
Application
Priority
EP 16153711 A 20160201
Abstract (en)
[origin: EP3199709A1] A drilling assembly (2) for forming an annular cavity in a substrate is disclosed. The drilling assembly comprises an annular inner pile (6) including a first annular part (10), an annular outer pile (4) including a second annular part (8) and cutters (16) mounted to an end of the inner pile. The first annular part is located inside the second annular part, and the cutters are moveable relative to the inner pile between a first condition, in which rotation in a first direction of the inner pile causes the cutters to form an annular cavity in the substrate, and a second condition, in which the inner pile and the cutters can be removed from the cavity while leaving the outer pile in the cavity.
IPC 8 full level
E02D 5/80 (2006.01)
CPC (source: EP)
E02D 5/80 (2013.01)
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)
DOCDB simple family (application)
EP 16153711 A 20160201