(19)

(11)

EP 2 438 301 A1

(12)

(43) Date of publication: 11.04.2012 Bulletin 2012/15 (21) Application number: 09785226.3 (22) Date of filing: 03.06.2009

(51) International Patent Classification (IPC):  F04B 43/04(2006.01) (86) International application number: PCT/GB2009/050613 (87) International publication number: WO 2010/139916 (09.12.2010 Gazette 2010/49)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR (71) Applicant: The Technology Partnership Plc Melbourn, Royston, Herts SG8 6EE (GB)	(72) Inventor: JANSE VAN RENSBURG, Richard Cambridgeshire CB23 6GP (GB) (74) Representative: Smee, Anthony James Michael  Gill Jennings & Every LLP The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)