(19)

(11)

EP 3 001 845 A1

(12)

(43) Date of publication: 06.04.2016 Bulletin 2016/14 (21) Application number: 13771558.7 (22) Date of filing: 21.08.2013

(51) International Patent Classification (IPC):  E03B 1/04(2006.01) F28D 21/00(2006.01) F24D 17/00(2006.01) (86) International application number: PCT/GB2013/052201 (87) International publication number: WO 2014/029991 (27.02.2014 Gazette 2014/09)

(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: 24.08.2012 GB 201215250 (71) Applicant: Metertech Limited London, EC2A 1DS (GB)	(72) Inventors: PEARSON, Allen Broughton Cambridgeshire PE28 3AS (GB) MURRAY, Edward Broughton Cambridgeshire PE28 3AS (GB) (74) Representative: Williams Powell  11 Staple Inn London WC1V 7QH London WC1V 7QH (GB)