(19)

(11)

EP 2 531 808 A1

(12)

(43) Date of publication: 12.12.2012 Bulletin 2012/50 (21) Application number: 11740105.9 (22) Date of filing: 18.01.2011

(51) International Patent Classification (IPC):  F42D 1/045(2006.01) F42B 3/26(2006.01) F42B 3/11(2006.01) (86) International application number: PCT/SE2011/050051 (87) International publication number: WO 2011/096872 (11.08.2011 Gazette 2011/32)

(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: 03.02.2010 SE 1050103 (71) Applicant: Bengtsson, Jan-Åke 524 93 Herrljunga (SE)	(72) Inventor: Bengtsson, Jan-Åke 524 93 Herrljunga (SE) (74) Representative: Johansson, Lars E.  Hynell Patenttjänst AB P.O. Box 138 683 23 Hagfors 683 23 Hagfors (SE)