(19)

(11)

EP 0 920 366 A1

(12)

(43) Date of publication: 09.06.1999 Bulletin 1999/23 (21) Application number: 98923051.0 (22) Date of filing: 20.05.1998

(51) International Patent Classification (IPC):  B25B 31/ 00( . ) (86) International application number: PCT/IT1998/000125 (87) International publication number: WO 1998/052722 (26.11.1998 Gazette 1998/47)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 20.05.1997 IT 1997VR00041 (71) Applicant: Coltro, Davide 37136 Verona (IT)	(72) Inventor: Coltro, Davide 37136 Verona (IT) (74) Representative: Petraz, Gilberto Luigi  GLP S.r.l. Piazzale Cavedalis 6/2 33100 Udine 33100 Udine (IT)