(19)

(11)

EP 2 739 789 A1

(12)

(43) Date of publication: 11.06.2014 Bulletin 2014/24 (21) Application number: 12753208.3 (22) Date of filing: 06.08.2012

(51) International Patent Classification (IPC):  E01F 15/04(2006.01) E04H 12/22(2006.01) E01F 15/06(2006.01) E04H 17/22(2006.01) (86) International application number: PCT/GB2012/051904 (87) International publication number: WO 2013/021189 (14.02.2013 Gazette 2013/07)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 05.08.2011 GB 201113601 (71) Applicant: Hill & Smith Limited Bilston, Wolverhampton WV14 0QL (GB)	(72) Inventors: SHARP, Graham Bilston Wolverhampton WV14 0QL (GB) BOX, Simon Bilston Wolverhampton WV14 0QL (GB) (74) Representative: Oxley, Robin John George  Marks & Clerk LLP Alpha Tower Suffolk Street Queensway Birmingham B1 1TT Birmingham B1 1TT (GB)