(19)

(11)

EP 1 179 166 A1

(12)

(43) Date of publication: 13.02.2002 Bulletin 2002/07 (21) Application number: 00921246.5 (22) Date of filing: 22.03.2000

(51) International Patent Classification (IPC)7: F26B 3/347 (86) International application number: PCT/SE0000/575 (87) International publication number: WO 0057/120 (28.09.2000 Gazette 2000/39)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 22.03.1999 SE 9901035 (71) Applicant: Zettergren, Leif Gösta 125 49 Järfälla (SE)	(72) Inventor: Zettergren, Leif Gösta 125 49 Järfälla (SE) (74) Representative: Falk, Bengt  Saab Bofors Support AB Patents and Trademarks 691 80 Karlskoga 691 80 Karlskoga (SE)