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(11)

EP 1 963 679 A1

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(43) Date of publication: 03.09.2008 Bulletin 2008/36 (21) Application number: 06840084.5 (22) Date of filing: 30.11.2006

(51) International Patent Classification (IPC):  F04C 18/16(2006.01) F04C 29/00(2006.01) (86) International application number: PCT/US2006/061415 (87) International publication number: WO 2007/076213 (05.07.2007 Gazette 2007/27)

(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: 23.12.2005 US 753858 P (71) Applicant: Gardner Denver, Inc. Quincy, IL 62305 (US)	(72) Inventors: HEIMONEN, Timothy, Keene La Grange, MO 63448 (US) HUGHES, Kevin, Peter La Grange, MO 63448 (US) (74) Representative: Rau, Albrecht et al Patentanwälte Rau, Schneck & Hübner Königstrasse 2 90402 Nürnberg 90402 Nürnberg (DE)