(19)

(11)

EP 1 619 988 A1

(12)

(43) Date of publication: 01.02.2006 Bulletin 2006/05 (21) Application number: 04728207.4 (22) Date of filing: 19.04.2004

(51) International Patent Classification (IPC):  A47L 9/24(1968.09) A47L 5/36(1968.09) (86) International application number: PCT/GB2004/001703 (87) International publication number: WO 2004/096002 (11.11.2004 Gazette 2004/46)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 25.04.2003 GB 0309381 (71) Applicant: Smiths Group plc London NW11 8DS (GB)	(72) Inventor: BATTLE, Philip, Peter Glasgow G63 0SX (GB) (74) Representative: Flint, Jonathan McNeill et al 765 Finchley Road London NW11 8DS London NW11 8DS (GB)