(19)

(11)

EP 2 097 647 A1

(12)

(43) Date of publication: 09.09.2009 Bulletin 2009/37 (21) Application number: 07703074.0 (22) Date of filing: 26.01.2007

(51) International Patent Classification (IPC):  F04C 19/00(2006.01) F04D 9/04(2006.01) F04D 9/00(2006.01) (86) International application number: PCT/EP2007/000695 (87) International publication number: WO 2008/080437 (10.07.2008 Gazette 2008/28)

(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 LV MC NL PL PT RO SE SI SK TR (30) Priority: 05.01.2007 DE 102007001770 (71) Applicant: Gardner Denver Deutschland GmbH 97616 Bad Neustadt (DE)	(72) Inventors: DITTMAR, Rudi, Dr. 98590 Wernshausen (DE) KOPF, Markus 36115 Wuestensachsen (DE) (74) Representative: Rau, Albrecht et al Patentanwälte Rau, Schneck & Hübner Königstrasse 2 90402 Nürnberg 90402 Nürnberg (DE)