(19)

(11)

EP 0 421 998 A1

(12)

(43) Date of publication: 17.04.1991 Bulletin 1991/16 (21) Application number: 89900846.0 (22) Date of filing: 22.12.1988

(51) International Patent Classification (IPC):  A47B 57/ 20( . ) (86) International application number: PCT/FI1988/000202 (87) International publication number: WO 1989/005596 (29.06.1989 Gazette 1989/14)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI NL SE (30) Priority: 23.12.1987 FI 19870005692 26.07.1988 FI 19880003518 (71) Applicant: ILMONI, Jouko SF-53800 Lappeenranta (FI)	(72) Inventor: ILMONI, Jouko SF-53800 Lappeenranta (FI) (74) Representative: TER MEER - MÜLLER - STEINMEISTER & PARTNER  Mauerkircherstrasse 45 D-81679 München D-81679 München (DE)