(19)

(11)

EP 0 775 294 A1

(12)

(43) Date of publication: 28.05.1997 Bulletin 1997/22 (21) Application number: 94919684.0 (22) Date of filing: 20.06.1994

(51) International Patent Classification (IPC):  G01F 1/ 704( . ) G01F 1/ 74( . ) G01N 23/ 12( . ) G01F 1/ 708( . ) G01F 1/ 86( . ) G01P 5/ 20( . ) (86) International application number: PCT/FI1994/000276 (87) International publication number: WO 1995/035482 (28.12.1995 Gazette 1996/03)

(84) Designated Contracting States: AT BE DE FR GB IT SE (71) Applicant: Huovilainen, Reino 54915 Saimaanharju (FI)	(72) Inventor: Huovilainen, Reino 54915 Saimaanharju (FI) (74) Representative: Helino, Timo Kalervo, et al  Papula Rein Lahtela Oy, P.O. Box 981 00101 Helsinki 00101 Helsinki (FI)