Closing spring assembly of switching mechanism for air circuit breaker

(19)

(11)

EP 1 914 771 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	16.09.2009 Bulletin 2009/38

(43)	Date of publication A2:
	23.04.2008 Bulletin 2008/17

(21)	Application number: 07019929.4

(22)	Date of filing: 11.10.2007

(51)

International Patent Classification (IPC):

H01H 3/30^(2006.01)

(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 MT NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK RS

(30)

Priority:

17.10.2006 KR 20060101054

(71)	Applicant: LS Industrial Systems Co., Ltd
	Jung-Gu Seoul (KR)

(72)	Inventors:
	Yang, Hong-Ik Cheongju Chungcheongbuk-do (KR) Lee, Sang-Chul Cheongju Chungcheongbuk-do (KR) Kim, Ki-Hwan Cheongju Chungcheongbuk-do (KR) Ahn, Kil-Young Daejeon (KR)

(74)	Representative: Altenburg, Udo
	Patent- und Rechtsanwälte Bardehle . Pagenberg . Dost . Altenburg . Geissler Galileiplatz 1 81679 München 81679 München (DE)

(54)	Closing spring assembly of switching mechanism for air circuit breaker

(57) Disclosed is a closing spring assembly of a switching mechanism (1) for an air circuit breaker which is capable of being produced with low cost by a general pressing process, and of supporting a load caused by an elastic energy of the closing spring, comprising: a closing spring (3), a first spring seat member (7), a second spring seat plate (6), a spring guide pin (5) having both end portions connected to the first spring seat member (7) and the second spring seat plate (6), and installed to penetrate the closing spring so as to guide and support the closing spring, and a supporting bracket (4) for supporting the second spring seat plate (6) of the closing spring (3) to be rotatable within a limited angle.

Search report