(19)

(11)

EP 1 737 328 A1

(12)

(43) Date of publication: 03.01.2007 Bulletin 2007/01 (21) Application number: 05729632.9 (22) Date of filing: 29.03.2005

(51) International Patent Classification (IPC):  A47L 9/24(2006.01) A47L 9/32(2006.01) (86) International application number: PCT/GB2005/001222 (87) International publication number: WO 2005/094656 (13.10.2005 Gazette 2005/41)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 03.04.2004 GB 0407655 (71) Applicant: Smiths Group plc London, NW11 8DS (GB)	(72) Inventors: BATTLE, Philip, Peter Glasgow G63 0SX (GB) GIBSON, Diane Clydebank G81 2UG (GB) MCGAW, Derek, Robert, Harkness Glasgow G62 6DS (GB) (74) Representative: Flint, Jonathan McNeill  765 Finchley Road London NW11 8DS London NW11 8DS (GB)