(19)

(11)

EP 0 504 354 A1

(12)

(43) Date of publication: 23.09.1992 Bulletin 1992/39 (21) Application number: 91917461.0 (22) Date of filing: 02.10.1991

(51) International Patent Classification (IPC):  A63C 17/ 04( . ) A63C 17/ 24( . ) A63C 17/ 08( . ) (86) International application number: PCT/SE1991/000660 (87) International publication number: WO 1992/005845 (16.04.1992 Gazette 1992/09)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 04.10.1990 SE 19900003174 (71) Applicant: EKSTRAND, Bengt S-552 46 Jöngköping (SE)	(72) Inventor: EKSTRAND, Bengt S-552 46 Jöngköping (SE) (74) Representative: Arwidi, Bengt Dr.  AHLPATENT AB Förborgsgatan 27 S-554 39 Jönköping S-554 39 Jönköping (SE)