(19)

(11)

EP 1 781 997 A1

(12)

(43) Date of publication: 09.05.2007 Bulletin 2007/19 (21) Application number: 05761766.4 (22) Date of filing: 06.07.2005

(51) International Patent Classification (IPC):  F24J 2/40(2006.01) F24J 2/46(2006.01) (86) International application number: PCT/CA2005/001048 (87) International publication number: WO 2006/002545 (12.01.2006 Gazette 2006/02)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK YU (30) Priority: 06.07.2004 CA 2473042 (71) Applicant: Shec Labs Saskatoon, s S7L 6A4 (CA)	(72) Inventor: TUCHELT, Maurice J. Regina, s S4R 4K8 (CA) (74) Representative: Brandon, Paul Laurence  APPLEYARD LEES, 15 Clare Road Halifax, West Yorkshire HX1 2HY Halifax, West Yorkshire HX1 2HY (GB)