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(11)

EP 2 539 641 A1

(12)

(43) Date of publication: 02.01.2013 Bulletin 2013/01 (21) Application number: 11705551.7 (22) Date of filing: 24.02.2011

(51) International Patent Classification (IPC):  F24F 11/00(2006.01) E05F 15/20(2006.01) E06B 7/02(2006.01) E05F 15/12(2006.01) (86) International application number: PCT/EP2011/052713 (87) International publication number: WO 2011/104290 (01.09.2011 Gazette 2011/35)

(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: 24.02.2010 GB 201003107 (71) Applicant: Dyer Environmental Controls Limited Cheadle Heath Stockport Cheshire SK3 0SD (GB)	(72) Inventors: CROSSLEY, Jonathan Cheadle Hulme Cheshire SK8 7LH (GB) KUNDGOL, Arun Manchester Greater Manchester M4 7AJ (GB) MELLORS, Nigel Rawtenstall Lancashire BB4 7SN (GB) WATERWORTH, Stephen High Peak Derbyshire SK22 4NU (GB) (74) Representative: Raffay & Fleck  Patentanwälte Grosse Bleichen 8 20354 Hamburg 20354 Hamburg (DE)