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(11)

EP 1 613 821 A1

(12)

(43) Date of publication: 11.01.2006 Bulletin 2006/02 (21) Application number: 04718781.0 (22) Date of filing: 09.03.2004

(51) International Patent Classification (IPC):  E04H 12/22(1968.09) (86) International application number: PCT/SE2004/000333 (87) International publication number: WO 2004/090265 (21.10.2004 Gazette 2004/43)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 11.04.2003 SE 0300639 (71) Applicants: Johansson, Roland 153 71 Hölö (SE) Mattsson, Johnny 542 42 Mariestad (SE)	(72) Inventors: Johansson, Roland 153 71 Hölö (SE) Mattsson, Johnny 542 42 Mariestad (SE) (74) Representative: Eriksson, Kjell  Norrtelje Patentbyra AB, P.O.B. 38 761 21 Norrtälje 761 21 Norrtälje (SE)