(19)

(11)

EP 0 804 685 A2

(12)

(43) Date of publication: 05.11.1997 Bulletin 1997/45 (21) Application number: 96900641.0 (22) Date of filing: 22.01.1996

(51) International Patent Classification (IPC):  F04B 49/ 00( . ) F04B 39/ 08( . ) F15B 11/ 08( . ) F01L 9/ 02( . ) F15B 7/ 02( . ) (86) International application number: PCT/GB1996/000127 (87) International publication number: WO 1996/022466 (25.07.1996 Gazette 1996/34)

(84) Designated Contracting States: BE CH DE ES FR GB IT LI NL SE (30) Priority: 20.01.1995 GB 19950001118 (71) Applicant: CARDING SPECIALISTS (CANADA) LIMITED Toronto, Ontario, M4V 2V3 (CA)	(72) Inventor: VARGA, John Holmfield Halifax HX2 9TN (GB) (74) Representative: Orr, William McLean  Urquhart-Dykes & Lord, Tower House, Merrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)