(19)

(11)

EP 1 618 266 A1

(12)

(43) Date of publication: 25.01.2006 Bulletin 2006/04 (21) Application number: 04724618.6 (22) Date of filing: 31.03.2004

(51) International Patent Classification (IPC):  E04G 23/02(1968.09) E02D 29/02(1968.09) E04B 2/86(1968.09) (86) International application number: PCT/EP2004/050401 (87) International publication number: WO 2004/088064 (14.10.2004 Gazette 2004/42)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 01.04.2003 IT TO20030250 (71) Applicant: Nuova Ceval S.R.L. I-11100 Aosta (IT)	(72) Inventor: LUCHINI, Claudio I-11100 Aosta (IT) (74) Representative: Jorio, Paolo et al STUDIO TORTA S.r.l. Via Viotti, 9 10121 Torino 10121 Torino (IT)