(19)

(11)

EP 2 758 721 A1

(12)

(43) Date of publication: 30.07.2014 Bulletin 2014/31 (21) Application number: 12737853.7 (22) Date of filing: 05.07.2012

(51) International Patent Classification (IPC):  F24F 3/147(2006.01) F24F 12/00(2006.01) F24F 5/00(2006.01) F28D 5/02(2006.01) (86) International application number: PCT/GB2012/000572 (87) International publication number: WO 2013/021147 (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 (30) Priority: 09.08.2011 GB 201113681 (71) Applicant: Williams, Duncan Raymond Barnt Green, Birmingham B45 8JN (GB)	(72) Inventor: Williams, Duncan Raymond Barnt Green, Birmingham B45 8JN (GB) (74) Representative: March, Gary Clifford  Clifton Cowley Legal 25 Meer Street Stratford-upon-Avon Warwickshire CV37 6QB Stratford-upon-Avon Warwickshire CV37 6QB (GB)