(19)

(11)

EP 2 507 777 A1

(12)

(43) Date of publication: 10.10.2012 Bulletin 2012/41 (21) Application number: 10724559.9 (22) Date of filing: 27.05.2010

(51) International Patent Classification (IPC):  G08B 17/10(2006.01) G08B 3/10(2006.01) G08B 29/28(2006.01) G08B 1/08(2006.01) G08B 7/06(2006.01) (86) International application number: PCT/GB2010/050887 (87) International publication number: WO 2010/136808 (02.12.2010 Gazette 2010/48)

(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 SE SI SK SM TR (30) Priority: 27.05.2009 GB 0909077 11.08.2009 GB 0914016 (71) Applicant: Wilson, Derek Alexander St Neots, Cambridgeshire PE19 6YN (GB)	(72) Inventor: TOOP, Nicolas James Cambridge Cambridgeshire CB1 7U (GB) (74) Representative: Tolfree, Adam Joseph Benjamin  Tolfree Patents & Trademarks Toll Drove Manea, Cambridgeshire PE15 0JX Manea, Cambridgeshire PE15 0JX (GB)