(19)

(11)

EP 0 587 564 A1

(12)

(43) Date of publication: 23.03.1994 Bulletin 1994/12 (21) Application number: 92903286.0 (22) Date of filing: 16.01.1992

(51) International Patent Classification (IPC):  F01N 3/ 02( . ) F01N 3/ 022( . ) F01N 3/ 28( . ) F01N 7/ 18( . ) F01N 3/ 021( . ) F01N 3/ 037( . ) F01N 7/ 02( . ) F02B 3/ 06( . ) (86) International application number: PCT/IT1992/000004 (87) International publication number: WO 1992/020910 (26.11.1992 Gazette 1992/29)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 13.05.1991 IT 1991MI01305 (71) Applicant: MEGNA, Saverio I-20052 Monza (IT)	(72) Inventor: MEGNA, Saverio I-20052 Monza (IT) (74) Representative: Righetti, Giuseppe  Bugnion S.p.A. Via Carlo Farini, 81 I-20159 Milano I-20159 Milano (IT)