(19)

(11)

EP 2 430 322 A1

(12)

(43) Date of publication: 21.03.2012 Bulletin 2012/12 (21) Application number: 09844511.7 (22) Date of filing: 15.05.2009

(51) International Patent Classification (IPC):  F16B 7/00(2006.01) F16B 21/00(2006.01) H01H 33/50(2006.01) F16B 7/14(2006.01) H01H 9/24(2006.01) (86) International application number: PCT/CN2009/071808 (87) International publication number: WO 2010/130099 (18.11.2010 Gazette 2010/46)

(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 (71) Applicant: ABB Technology Ltd 8050 Zürich (CH)	(72) Inventors: CEN, Fei Xiamen Fujian 361006 (CN) HUANG, Xiaobo Xiamen Fujian 361006 (CN) (74) Representative: Zimmermann & Partner  Josephspitalstr. 15 80331 München 80331 München (DE)