(19)

(11)

EP 2 225 418 A1

(12)

(43) Date of publication: 08.09.2010 Bulletin 2010/36 (21) Application number: 08859845.3 (22) Date of filing: 12.12.2008

(51) International Patent Classification (IPC):  E01F 5/00(2006.01) F16L 55/164(2006.01) (86) International application number: PCT/SE2008/051447 (87) International publication number: WO 2009/075647 (18.06.2009 Gazette 2009/25)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 12.12.2007 SE 0702779 (71) Applicant: WBF Invest AB 435 33 Mölnlycke (SE)	(72) Inventors: WALLENTHEIM, Pär 430 63 Hindås (SE) SÖNKSEN, Hans 460 11 Nygård (SE) (74) Representative: Sandstedt, Jonas Sven James  Albihns.Zacco Torggatan 8 Box 142 401 22 Göteborg 401 22 Göteborg (SE)