(19)

(11)

EP 1 551 619 A1

(12)

(43) Date of publication: 13.07.2005 Bulletin 2005/28 (21) Application number: 02766278.2 (22) Date of filing: 12.09.2002

(51) International Patent Classification (IPC)7: B29D 30/26, B29D 30/32 (86) International application number: PCT/US2002/029136 (87) International publication number: WO 2004/024430 (25.03.2004 Gazette 2004/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR Designated Extension States: AL LT LV MK RO SI (71) Applicants: Société de Technologie Michelin 63000 Clermont-Ferrand (FR) MICHELIN RECHERCHE ET TECHNIQUE S.A. CH-1763 Granges-Paccot (CH)	(72) Inventor: WIENS, John F-63170 Perignat les Sarlieve (FR) (74) Representative: Bauvir, Jacques  M.F.P. Michelin,SGD/LG/PI-F35-Ladoux 63040 Clermont-Ferrand Cedex 09 63040 Clermont-Ferrand Cedex 09 (FR)