(19)

(11)

EP 1 979 615 A1

(12)

(43) Date of publication: 15.10.2008 Bulletin 2008/42 (21) Application number: 07762731.3 (22) Date of filing: 30.01.2007

(51) International Patent Classification (IPC):  F04B 49/20(2006.01) F04B 49/06(2006.01) (86) International application number: PCT/US2007/002643 (87) International publication number: WO 2007/089842 (09.08.2007 Gazette 2007/32)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 01.02.2006 US 764243 P (71) Applicant: INGERSOLL-RAND COMPANY Montvale, NJ 07645 (US)	(72) Inventors: LEVAN, Jimmy L. Statesville, NC 28677 (US) MISTRY, Vipul R. Charlotte, NC 28214 (US) (74) Representative: Every, David Aidan et al Marks & Clerk Sussex House 83-85 Mosley Street Manchester M2 3LG Manchester M2 3LG (GB)