(19)

(11)

EP 0 416 074 A1

(12)

(43) Date of publication: 13.03.1991 Bulletin 1991/11 (21) Application number: 90904798.0 (22) Date of filing: 20.03.1990

(51) International Patent Classification (IPC):  B25B 7/ 22( . ) B25F 1/ 00( . ) (86) International application number: PCT/EP1990/000455 (87) International publication number: WO 1990/011164 (04.10.1990 Gazette 1990/23)

(84) Designated Contracting States: AT BE CH DE ES FR GB LI LU NL SE (30) Priority: 22.03.1989 IT 19890030632 (71) Applicant: GASPARETTI, Roberto I-35100 Padova (IT)	(72) Inventor: GASPARETTI, Roberto I-35100 Padova (IT) (74) Representative: Josif, Albert, Dr.-Ing., et al  Modiano & Associati S.r.l. Via Meravigli, 16 I-20123 Milano I-20123 Milano (IT)