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(11)

EP 1 687 533 A1

(12)

(43) Date of publication: 09.08.2006 Bulletin 2006/32 (21) Application number: 04799747.3 (22) Date of filing: 11.11.2004

(51) International Patent Classification (IPC):  F04B 39/02(2006.01) (86) International application number: PCT/JP2004/017134 (87) International publication number: WO 2005/047699 (26.05.2005 Gazette 2005/21)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 12.11.2003 JP 2003382195 (71) Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. Kadoma-shi, Osaka 571-8501 (JP)	(72) Inventor: NISHIHARA,Hidetoshi,c/oMatsushita Elec.Ind.Co.,Ltd Chuoku, Osaka-shi, Osaka 540-6319 (JP) (74) Representative: Eisenführ, Speiser & Partner  Patentanwälte Rechtsanwälte Postfach 10 60 78 28060 Bremen 28060 Bremen (DE)