(19)

(11)

EP 0 445 169 A1

(12)

(43) Date of publication: 11.09.1991 Bulletin 1991/37 (21) Application number: 89913017.0 (22) Date of filing: 22.11.1989

(51) International Patent Classification (IPC):  B01F 5/ 04( . ) B05B 7/ 00( . ) C02F 3/ 12( . ) B01F 5/ 06( . ) C02F 1/ 20( . ) (86) International application number: PCT/GB1989/001395 (87) International publication number: WO 1990/005583 (31.05.1990 Gazette 1990/12)

(84) Designated Contracting States: AT BE CH DE ES FR GB IT LI LU NL SE (30) Priority: 22.11.1988 GB 19880027197 08.12.1988 GB 19880028750 26.01.1989 GB 19890001648 21.03.1989 GB 19890006512 24.04.1989 GB 19890009312 (71) Applicant: DUNNE MILLER WESTON LIMITED Suffolk IP12 1RJ (GB)	(72) Inventors: DUNNE, Stephen Terence Ipswich IP7 6QH (GB) WESTON, Terence Edward Suffolk IP13 8EH (GB) (74) Representative: Nash, Keith Wilfrid, et al  KEITH W. NASH & Co. Pearl Assurance House 90-92 Regent Street Cambridge CB2 1DP Cambridge CB2 1DP (GB)