(19)

(11)

EP 1 381 433 A1

(12)

(43) Date of publication: 21.01.2004 Bulletin 2004/04 (21) Application number: 01921657.1 (22) Date of filing: 20.04.2001

(51) International Patent Classification (IPC)7: A63B 69/36, A63B 53/04 (86) International application number: PCT/GB2001/001796 (87) International publication number: WO 2002/085471 (31.10.2002 Gazette 2002/44)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (71) Applicant: Zen Corporation Limited Sheffield S1 4PT (GB)	(72) Inventor: MIDDLETON, Nicholas Mark Sheffield S8 7UF (GB) (74) Representative: Wood, Graham  Bailey Walsh & Co,5 York Place Leeds LS1 2SD Leeds LS1 2SD (GB)