(19)

(11)

EP 0 958 154 A1

(12)

(43) Date of publication: 24.11.1999 Bulletin 1999/47 (21) Application number: 98903139.0 (22) Date of filing: 05.02.1998

(51) International Patent Classification (IPC):  B60C 23/ 04( . ) (86) International application number: PCT/GB1998/000358 (87) International publication number: WO 1998/034799 (13.08.1998 Gazette 1998/32)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 05.02.1997 GB 19970002295 (71) Applicant: XPERTECH LIMITED Chesham, Buckinghamshire HP5 1HY (GB)	(72) Inventor: OWENS, David, Caradoc Etchingham East Sussex TN19 7PB (GB) (74) Representative: Walker, Neville Daniel Alan  QED I.P. Services Limited Dawley Road Hayes, Middlesex UB3 1HH Hayes, Middlesex UB3 1HH (GB)