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EP 1 763 634 A1

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(43) Date of publication: 21.03.2007 Bulletin 2007/12 (21) Application number: 06780901.2 (22) Date of filing: 03.07.2006

(51) International Patent Classification (IPC):  F04B 39/00(2006.01) (86) International application number: PCT/JP2006/013626 (87) International publication number: WO 2007/004725 (11.01.2007 Gazette 2007/02)

(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 Designated Extension States: AL BA HR MK YU (30) Priority: 06.07.2005 JP 2005197179 (71) Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. Osaka 571-8501 (JP)

(72) Inventors: UMEOKA, Ikutomo c/o Matsushita Electric. Ind. Co., 1-chome,Chuo-ku,Osaka-shi Osaka 540-6319 (JP) IDE, Terumasa c/o Matsushita Electric. Ind. Co., 1-chome,Chuo-ku,Osaka-shi Osaka 540-6319 (JP) MARUYAMA, Tomio c/o Matsushita Electric. Ind. Co., 1-chome,Chuo-ku,Osaka-shi Osaka 540-6319 (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)