(19)

(11)

EP 1 747 377 A1

(12)

(43) Date of publication: 31.01.2007 Bulletin 2007/05 (21) Application number: 05732227.3 (22) Date of filing: 14.04.2005

(51) International Patent Classification (IPC):  F04D 7/04(2006.01) F04D 29/24(2006.01) (86) International application number: PCT/SE2005/000541 (87) International publication number: WO 2005/100796 (27.10.2005 Gazette 2005/43)

(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 MC NL PL PT RO SE SI SK TR (30) Priority: 15.04.2004 SE 0400964 (71) Applicant: PUMPEX PRODUCTION AB 914 32 Nordmaling (SE)	(72) Inventor: FREDRIKSSON, Axel S-914 31 Nordmaling (SE) (74) Representative: Pierrou, Mattias  Awapatent AB, P.O. Box 45 086 104 30 Stockholm 104 30 Stockholm (SE)