(19)

(11)

EP 0 833 991 A1

(12)

(43) Date of publication: 08.04.1998 Bulletin 1998/15 (21) Application number: 96918744.0 (22) Date of filing: 17.06.1996

(51) International Patent Classification (IPC):  B01D 35/ 30( . ) F16B 19/ 10( . ) F16B 7/ 04( . ) (86) International application number: PCT/GB1996/001435 (87) International publication number: WO 1997/000360 (03.01.1997 Gazette 1997/02)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE (30) Priority: 17.06.1995 GB 19950012357 (71) Applicant: Singleton, Mark James Lulsley, Worcestershire WR6 5QL (GB)	(72) Inventor: Singleton, Mark James Lulsley, Worcestershire WR6 5QL (GB) (74) Representative: Enskat, Michael Antony Frank  Rowland Allsop & Co., 9 Rickmansworth Road Watford, Hertfordshire WD1 7HE Watford, Hertfordshire WD1 7HE (GB)