(19)

(11)

EP 1 685 329 A1

(12)

(43) Date of publication: 02.08.2006 Bulletin 2006/31 (21) Application number: 04793839.4 (22) Date of filing: 22.10.2004

(51) International Patent Classification (IPC):  F15B 13/04(2006.01) (86) International application number: PCT/SE2004/001538 (87) International publication number: WO 2005/038268 (28.04.2005 Gazette 2005/17)

(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 (30) Priority: 22.10.2003 SE 0302801 (71) Applicant: Nordhydraulic AB 872 24 Kramfors (SE)	(72) Inventor: ANDERSSON, Bo S-554 48 Jönköping (SE) (74) Representative: Holmberg, Nils Anders Patrik  Dr Ludwig Brann Patentbyra AB P.O. Box 17192 104 62 Stockholm 104 62 Stockholm (SE)