(19)

(11)

EP 1 682 779 A1

(12)

(43) Date of publication: 26.07.2006 Bulletin 2006/30 (21) Application number: 04768299.2 (22) Date of filing: 02.09.2004

(51) International Patent Classification (IPC):  F04D 29/28(2006.01) (86) International application number: PCT/GB2004/003752 (87) International publication number: WO 2005/024242 (17.03.2005 Gazette 2005/11)

(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: 09.09.2003 GB 0321088 (71) Applicant: Dynamic Boosting Systems Limited London EC2M 2TD (GB)	(72) Inventors: VINE, Andrew John Barnes, London SW13 9HR (GB) PULLEN, Keith Robert Acton, London W3 9HH (GB) (74) Representative: Roberts, Gwilym Vaughan et al Kilburn & Strode 20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)