(19)

(11)

EP 1 922 118 A1

(12)

(43) Date of publication: 21.05.2008 Bulletin 2008/21 (21) Application number: 06726937.3 (22) Date of filing: 28.04.2006

(51) International Patent Classification (IPC):  A63B 29/02(2006.01) (86) International application number: PCT/GB2006/001557 (87) International publication number: WO 2006/125942 (30.11.2006 Gazette 2006/48)

(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 LV MC NL PL PT RO SE SI SK TR (30) Priority: 27.05.2005 GB 0510755 (71) Applicant: Liverpool John Moores University School of the Built Environment Liverpool L1 7BY (GB)	(72) Inventor: HEMSLEY, David Rugby, Warwickshire (GB) (74) Representative: Teasdale, Nicola Joanne et al Marks & Clerk Patent and Trade Mark Attorneys Tower Building Water Street Liverpool L3 1BA Liverpool L3 1BA (GB)