(19)

(11)

EP 1 478 961 A2

(12)

(88) Date of publication A3: 04.12.2003 (43) Date of publication: 24.11.2004 Bulletin 2004/48 (21) Application number: 03713584.5 (22) Date of filing: 24.02.2003

(51) International Patent Classification (IPC)7: G02B 6/42, H04B 10/24 (86) International application number: PCT/US2003/005249 (87) International publication number: WO 2003/073139 (04.09.2003 Gazette 2003/36)

(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 PT SE SI SK TR Designated Extension States: AL LT LV MK RO (30) Priority: 22.02.2002 US 359028 P 22.02.2002 US 358914 P 29.11.2002 US 429962 P (71) Applicant: Parker Hannifin Corporation Cleveland, OH 44124-4141 (US)	(72) Inventor: MORRISON, Brian, D. Hopkington, MA 01748 (US) (74) Representative: Pilch, Adam John Michael  D Young & Co120 Holborn London EC1N 2DY London EC1N 2DY (GB)