(19)

(11)

EP 0 879 387 A1

(12)

(43) Date of publication: 25.11.1998 Bulletin 1998/48 (21) Application number: 97902724.0 (22) Date of filing: 05.02.1997

(51) International Patent Classification (IPC):  B08B 15/ 02( . ) F24F 7/ 06( . ) F24C 15/ 20( . ) (86) International application number: PCT/NL1997/000035 (87) International publication number: WO 1997/028405 (07.08.1997 Gazette 1997/34)

(84) Designated Contracting States: BE FR LU NL (30) Priority: 05.02.1996 NL 19961002244 (71) Applicant: J.E. Stork Ventilatoren B.V. 8401 AM Zwolle (NL)	(72) Inventor: JANSEN, Paulus, Simon, Wilhelmus NL-8191 JD Wapenveld (NL) (74) Representative: Schumann, Bernard Herman Johan  Arnold & Siedsma, Advocaten en Octrooigemachtigden, Sweelinckplein 1 2517 GK Den Haag 2517 GK Den Haag (NL)