(19)

(11)

EP 1 740 780 A1

(12)

(43) Date of publication: 10.01.2007 Bulletin 2007/02 (21) Application number: 05738251.7 (22) Date of filing: 19.04.2005

(51) International Patent Classification (IPC):  E03D 5/092(2006.01) (86) International application number: PCT/GB2005/001497 (87) International publication number: WO 2005/103400 (03.11.2005 Gazette 2005/44)

(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: 22.04.2004 GB 0408918 (71) Applicant: FROST, Douglas, Robert, David Burntwood, Staffordshire WS7 9LD (GB)	(72) Inventor: FROST, Douglas, Robert, David Burntwood, Staffordshire WS7 9LD (GB) (74) Representative: Wilson Gunn  Charles House 148/9 Great Charles Street Birmingham B3 3HT Birmingham B3 3HT (GB)