(19)

(11)

EP 1 129 289 A1

(12)

(43) Date of publication: 05.09.2001 Bulletin 2001/36 (21) Application number: 99954167.5 (22) Date of filing: 08.11.1999

(51) International Patent Classification (IPC)7: F04B 43/12, F04B 43/00, C02F 1/48, B01D 35/06, B01D 35/26, B01D 21/00 (86) International application number: PCT/GB9903/703 (87) International publication number: WO 0028/214 (18.05.2000 Gazette 2000/20)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 06.11.1998 GB 9824456 23.09.1999 GB 9922399 01.10.1999 GB 9923111 05.10.1999 GB 9923343 (71) Applicant: Albury Bourne Ltd. Cranbrook,Kent TN17 3DN (GB)	(72) Inventors: CRANE, Keith BuryLancashire BL0 9AH (GB) HOARE, David, Arthur CranbrookKent TN17 3DN (GB) (74) Representative: Carpmael, John William Maurice et al CARPMAELS & RANSFORD43 Bloomsbury Square London, WC1A 2RA London, WC1A 2RA (GB)