(19)

(11)

EP 2 255 041 A1

(12)

(43) Date of publication: 01.12.2010 Bulletin 2010/48 (21) Application number: 09710658.7 (22) Date of filing: 12.02.2009

(51) International Patent Classification (IPC):  E03D 11/14(2006.01) E03C 1/122(2006.01) (86) International application number: PCT/GB2009/000383 (87) International publication number: WO 2009/101402 (20.08.2009 Gazette 2009/34)

(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: 14.02.2008 GB 0802755 (71) Applicant: Polypipe Terrain Ltd Kent ME20 7PJ (GB)	(72) Inventors: WEBB, Darren Kent ME1 3YG (GB) CAPON, Nigel Kent ME15 9XG (GB) (74) Representative: Oxley, Robin John George  Marks & Clerk LLP 90 Long Acre London WC2E 9RA London WC2E 9RA (GB)