(19)

(11)

EP 2 310 581 A1

(12)

(43) Date of publication: 20.04.2011 Bulletin 2011/16 (21) Application number: 09769600.9 (22) Date of filing: 24.06.2009

(51) International Patent Classification (IPC):  E03D 5/02(2006.01) E03D 5/10(2006.01) (86) International application number: PCT/GB2009/050726 (87) International publication number: WO 2009/156759 (30.12.2009 Gazette 2009/53)

(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 Designated Extension States: AL BA RS (30) Priority: 24.06.2008 GB 0811563 (71) Applicant: Thomas Dudley Limited Dudley West Midlands DY1 4SN (GB)	(72) Inventors: DUDLEY, Martin Shropshire WV15 6EW (GB) CRESSWELL, Peter John Bilston WV14 8RG (GB) (74) Representative: Lessard, Jason Donat  Hepworth Browne Bourton Hall Rugby CV23 9SD Rugby CV23 9SD (GB)