(19)

(11)

EP 0 420 891 A1

(12)

(43) Date of publication: 10.04.1991 Bulletin 1991/15 (21) Application number: 89906859.0 (22) Date of filing: 18.05.1989

(51) International Patent Classification (IPC):  A63B 51/ 12( . ) (86) International application number: PCT/SE1989/000273 (87) International publication number: WO 1989/011892 (14.12.1989 Gazette 1989/29)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 06.06.1988 SE 19880002104 (71) Applicant: TOOLING PROMOTION AB S-411 26 Göteborg (SE)	(72) Inventor: PETTERSSON, Bengt S-434 00 Kungsbacka (SE) (74) Representative: Graudums, Valdis, et al  Albihn West AB, Box 142 S-401 22 Göteborg S-401 22 Göteborg (SE)