(19)

(11)

EP 1 105 307 A1

(12)

(43) Date of publication: 13.06.2001 Bulletin 2001/24 (21) Application number: 99941745.4 (22) Date of filing: 24.08.1999

(51) International Patent Classification (IPC)7: B60T 17/00, B01D 53/26 (86) International application number: PCT/GB9902/789 (87) International publication number: WO 0010/857 (02.03.2000 Gazette 2000/09)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 25.08.1998 GB 9818386 (71) Applicant: WABCO AUTOMOTIVE U.K. LIMITED Morley,Leeds, LS27 0HQ (GB)	(72) Inventor: TOWNSEND, David Hugh Wakefield,West Yorshire WF3 1ET (GB) (74) Representative: Gray, James et al Withers & Rogers,Goldings House,2 Hays Lane London SE1 2HW London SE1 2HW (GB)