(19)

(11)

EP 0 354 949 A1

(12)

(43) Date of publication: 21.02.1990 Bulletin 1990/08 (21) Application number: 89902262.0 (22) Date of filing: 13.02.1989

(51) International Patent Classification (IPC):  F24F 13/ 06( . ) F24F 13/ 24( . ) (86) International application number: PCT/FI1989/000021 (87) International publication number: WO 1989/007739 (24.08.1989 Gazette 1989/20)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 19.02.1988 FI 19880000799 (71) Applicant: HALTON OY SF-47400 Kausala (FI)	(72) Inventor: PELLINEN, Teuvo SF-47400 Kausala (FI) (74) Representative: Lyndon-Stanford, Edward Willoughby Brooke, et al  MARKS & CLERK, 57/60 Lincoln's Inn Fields London WC2A 3LS London WC2A 3LS (GB)