EP 1716295 A1 20061102 - ANNULAR RING ELEMENT
Title (en)
ANNULAR RING ELEMENT
Title (de)
RINGELEMENT
Title (fr)
ELEMENT ANNULAIRE
Publication
Application
Priority
- AT 2005000048 W 20050214
- AT 2802004 A 20040220
Abstract (en)
[origin: WO2005080692A1] The invention relates to a cylindrical or frustoconical annular element or liner for producing a gully hole or pipe well or a pipe conduit. The outer surface (5) of the annular element (1) is provided with longitudinal ribs (3) which are aligned especially in parallel to the generatrices and/or parallel to the center central axis (7) of the annular element (1). According to the invention, at least two contiguous longitudinal ribs (3) with substantially parallel direction of projection extend from the outer surface (5).
IPC 8 full level
E02D 29/12 (2006.01)
CPC (source: EP US)
E02D 29/12 (2013.01 - EP US); E02D 29/121 (2013.01 - EP US); E02D 29/124 (2013.01 - EP US); E02D 29/125 (2013.01 - EP US)
Citation (search report)
See references of WO 2005080692A1
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 MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005080692 A1 20050901; AT 500139 A1 20051115; AT 500139 B1 20060615; AT 500139 B8 20070215; CA 2556851 A1 20050901; EP 1716295 A1 20061102; US 2007166108 A1 20070719
DOCDB simple family (application)
AT 2005000048 W 20050214; AT 2802004 A 20040220; CA 2556851 A 20050214; EP 05706189 A 20050214; US 59012305 A 20050214