(19)

(11)

EP 2 580 411 A1

(12)

(43) Date of publication: 17.04.2013 Bulletin 2013/16 (21) Application number: 11725191.8 (22) Date of filing: 03.06.2011

(51) International Patent Classification (IPC):  E05B 1/00(2006.01) E05B 15/16(2006.01) E05B 15/02(2006.01) (86) International application number: PCT/GB2011/051052 (87) International publication number: WO 2011/154723 (15.12.2011 Gazette 2011/50)

(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 (30) Priority: 10.06.2010 GB 201009689 (71) Applicant: Heywood Williams Components Limited Elland, Yorkshire HX5 9HT (GB)	(72) Inventors: PEARSON, Paul Robert Elland West Yorkshire HX5 9HT (GB) KEELING, James Warren Elland West Yorkshire HX5 9HT (GB) (74) Representative: Waddington, Richard  Appleyard Lees 15 Clare Road Halifax Yorkshire HX1 2HY Halifax Yorkshire HX1 2HY (GB)