(19)

(11)

EP 0 870 153 A1

(12)

(43) Date of publication: 14.10.1998 Bulletin 1998/42 (21) Application number: 96907528.0 (22) Date of filing: 01.04.1996

(51) International Patent Classification (IPC):  F17C 13/ 04( . ) G05D 16/ 10( . ) (86) International application number: PCT/FI1996/000176 (87) International publication number: WO 1996/031729 (10.10.1996 Gazette 1996/45)

(84) Designated Contracting States: AT CH DE DK GB LI SE (30) Priority: 07.04.1995 FI 19950001691 (71) Applicants: Kivinen, Arto 33410 Tampere (FI) Kuhmonen, Harri 33900 Tampere (FI)	(72) Inventors: Kivinen, Arto 33410 Tampere (FI) Kuhmonen, Harri 33900 Tampere (FI) (74) Representative: Huhtanen, Ossi Jaakko, et al  Kolster Oy AB, Iso Roobertinkatu 23, P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)