(19)

(11)

EP 2 598 748 A2

(12)

(88) Date of publication A3: 22.03.2012 (43) Date of publication: 05.06.2013 Bulletin 2013/23 (21) Application number: 11741073.8 (22) Date of filing: 01.08.2011

(51) International Patent Classification (IPC):  F03C 1/06(2006.01) F04B 1/32(2006.01) F04B 1/20(2006.01) (86) International application number: PCT/US2011/046123 (87) International publication number: WO 2012/016240 (02.02.2012 Gazette 2012/05)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 30.07.2010 US 369209 P (71) Applicant: Parker-Hannifin Corporation Cleveland, Ohio 44124 (US)	(72) Inventors: LARKIN, Bruce Plainwell Michigan 49080-9123 (US) HARTTER, Larry Rochester Hills Michigan 48306 (US) KORENKIEWICZ, Paul Shelby Township Michigan 48316 (US) (74) Representative: Belcher, Simon James  Urquhart-Dykes & Lord LLP Tower North Central Merrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)