(19)

(11)

EP 0 449 938 A1

(12)

(43) Date of publication: 09.10.1991 Bulletin 1991/41 (21) Application number: 90901077.0 (22) Date of filing: 15.12.1989

(51) International Patent Classification (IPC):  A61G 7/ 10( . ) A61G 7/ 12( . ) (86) International application number: PCT/SE1989/000734 (87) International publication number: WO 1990/006738 (28.06.1990 Gazette 1990/15)

(84) Designated Contracting States: DE FR GB NL (30) Priority: 22.12.1988 SE 19880004635 (71) Applicant: Liljedahl, Gunnar S-951 90 Lulea (SE)	(72) Inventor: Liljedahl, Gunnar S-951 90 Lulea (SE) (74) Representative: Billberg, Hans, et al  Axel Ehrners Patentbyra AB Box 10 316 S-100 55 Stockholm S-100 55 Stockholm (SE)