(19)

(11)

EP 0 870 139 A1

(12)

(43) Date of publication: 14.10.1998 Bulletin 1998/42 (21) Application number: 96913548.0 (22) Date of filing: 06.05.1996

(51) International Patent Classification (IPC):  F16K 11/ 085( . ) (86) International application number: PCT/FI1996/000251 (87) International publication number: WO 1996/035897 (14.11.1996 Gazette 1996/50)

(84) Designated Contracting States: DE DK FR GB IT (30) Priority: 10.05.1995 FI 19950002273 (71) Applicant: Levent Oy 37801 Toijala (FI)	(72) Inventor: YLÄ-HÄKKINEN, Erkki FIN-04440 Järvenpää (FI) (74) Representative: Heinänen, Pekka Antero, et al  Patenttitoimisto Oy Heinänen Ab Annankatu 31 - 33 C 00100 Helsinki 00100 Helsinki (FI)