(19)

(11)

EP 0 446 331 A1

(12)

(43) Date of publication: 18.09.1991 Bulletin 1991/38 (21) Application number: 90914658.0 (22) Date of filing: 04.10.1990

(51) International Patent Classification (IPC):  F01B 9/ 02( . ) F04B 9/ 04( . ) F04B 9/ 02( . ) (86) International application number: PCT/BR1990/000018 (87) International publication number: WO 1991/005164 (18.04.1991 Gazette 1991/09)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 03.10.1989 BR 19890005019 (71) Applicants: NASCIMENTO PACHECO, José, Mauricio 13050-Campinas, SP (BR) NASCIMENTO PACHECO, Claudio 13023-Campinas, SP (BR)	(72) Inventors: NASCIMENTO PACHECO, José, Mauricio 13050-Campinas, SP (BR) NASCIMENTO PACHECO, Claudio 13023-Campinas, SP (BR) (74) Representative: Darby, David Thomas  Abel & Imray Northumberland House 303-306 High Holborn London WC1V 7LH London WC1V 7LH (GB)