(19)

(11)

EP 2 697 434 A1

(12)

(43) Date of publication: 19.02.2014 Bulletin 2014/08 (21) Application number: 12715374.0 (22) Date of filing: 13.04.2012

(51) International Patent Classification (IPC):  E01C 23/03(2006.01) E01C 19/48(2006.01) E01C 23/06(2006.01) (86) International application number: PCT/EP2012/056780 (87) International publication number: WO 2012/140198 (18.10.2012 Gazette 2012/42)

(84) Designated Contracting States: 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 (30) Priority: 15.04.2011 EP 11162603 (71) Applicant: Tony Duffy Engineering Ltd. Co. Wicklow (IE)	(72) Inventor: DUFFY, Tony Baltinglass Co. Wicklow (IE) (74) Representative: O'Neill, Aoife et al Tomkins & Co. 5 Dartmouth Road Dublin 6 Dublin 6 (IE)