(19)

(11)

EP 1 497 516 A1

(12)

(43) Date of publication: 19.01.2005 Bulletin 2005/03 (21) Application number: 03712526.7 (22) Date of filing: 15.04.2003

(51) International Patent Classification (IPC)7: E04H 6/22 (86) International application number: PCT/IB2003/001402 (87) International publication number: WO 2003/089737 (30.10.2003 Gazette 2003/44)

(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 PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 22.04.2002 SM 200200008 (71) Applicant: Dotta, Angelo I-40136 Bologna (IT)	(72) Inventor: Dotta, Angelo I-40136 Bologna (IT) (74) Representative: Pozzi, Andrea  KEMIA S.A.Via Bagutti 14 6904 Lugano 6904 Lugano (CH)