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(11)

EP 2 032 853 A1

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(43) Date of publication: 11.03.2009 Bulletin 2009/11 (21) Application number: 07744974.2 (22) Date of filing: 05.06.2007

(51) International Patent Classification (IPC):  F04B 39/00(2006.01) F04B 39/12(2006.01) (86) International application number: PCT/JP2007/061682 (87) International publication number: WO 2007/148549 (27.12.2007 Gazette 2007/52)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 23.06.2006 JP 2006173351 (71) Applicant: Panasonic Corporation Kadoma-shi Osaka 571-8501 (JP)	(72) Inventor: YOKOTA, Kazuhiro Osaka, 540-6207 (JP) (74) Representative: Pautex Schneider, Nicole Véronique et al Novagraaf International SA 25, avenue du Pailly 1220 Les Avanchets - Geneva 1220 Les Avanchets - Geneva (CH)