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(11)

EP 2 004 000 A1

(12)

(43) Date of publication: 24.12.2008 Bulletin 2008/52 (21) Application number: 06799150.5 (22) Date of filing: 10.10.2006

(51) International Patent Classification (IPC):  A42B 3/18(2006.01) (86) International application number: PCT/KR2006/004070 (87) International publication number: WO 2007/117066 (18.10.2007 Gazette 2007/42)

(84) Designated Contracting States: (30) Priority: 12.04.2006 KR 20060033059 (71) Applicants: KOREA ELECTRIC POWER CORPORATION Seoul 135-791 (KR) Otostech Co., Ltd. Seoul 153-801 (KR)	(72) Inventors: KANG, Nae-Goog Seoul 135-993 (KR) JUNG, Chi-kyo Gyeonggi-do 463-796 (KR) HUH, Moon-Young Seoul 153-801 (KR) YOO, Jae-Sik Seoul 135-847 (KR) (74) Representative: Haley, Stephen  Gill Jennings & Every LLP Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)