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(11)

EP 2 291 265 A1

(12)

(43) Date of publication: 09.03.2011 Bulletin 2011/10 (21) Application number: 09770495.1 (22) Date of filing: 27.05.2009

(51) International Patent Classification (IPC):  B24C 1/00(2006.01) B24C 1/10(2006.01) B21D 31/06(2006.01) F16K 15/00(2006.01) (86) International application number: PCT/SG2009/000187 (87) International publication number: WO 2009/157874 (30.12.2009 Gazette 2009/53)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 24.06.2008 SG 200804788 (71) Applicant: Panasonic Corporation Kadoma-shi Osaka 571-8501 (JP)	(72) Inventors: KWAN, Hoe Chuan Singapore 469267 (SG) TAN, Kar Li Singapore 469267 (SG) HOSOI, Takefumi Singapore 469267 (SG) (74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät  Leopoldstrasse 4 80802 München 80802 München (DE)