(19)

(11)

EP 0 486 558 A1

(12)

(43) Date of publication: 27.05.1992 Bulletin 1992/22 (21) Application number: 90912106.0 (22) Date of filing: 09.08.1990

(51) International Patent Classification (IPC):  A63B 69/ 36( . ) (86) International application number: PCT/GB1990/001243 (87) International publication number: WO 1991/002570 (07.03.1991 Gazette 1991/06)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 14.08.1989 GB 19890018510 (71) Applicant: ASHTON, James Terence Enfield, Middlesex (GB)	(72) Inventor: ASHTON, James Terence Enfield, Middlesex (GB) (74) Representative: Sommerville, John Henry  SOMMERVILLE & RUSHTON 11 Holywell Hill St. Albans Hertfordshire, AL1 1EZ St. Albans Hertfordshire, AL1 1EZ (GB)