(19)

(11)

EP 0 910 848 A1

(12)

(43) Date of publication: 28.04.1999 Bulletin 1999/17 (21) Application number: 97930512.0 (22) Date of filing: 08.07.1997

(51) International Patent Classification (IPC):  G10K 9/ 22( . ) (86) International application number: PCT/EP1997/003599 (87) International publication number: WO 1998/002871 (22.01.1998 Gazette 1998/03)

(84) Designated Contracting States: DE ES FR GB IT SE (30) Priority: 11.07.1996 IT 1996TO00589 (71) Applicant: C.R.F. Societa' Consortile per Azioni 10043 Orbassano (Torino) (IT)	(72) Inventor: STECCAZZINI, Franco I-10043 Orbassano (IT) (74) Representative: Buzzi, Franco, et al  c/o Buzzi, Notaro & Antonielli d'Oulx Corso Fiume 6 10133 Torino 10133 Torino (IT)