Appeal No. 2002-0582
Application No. 09/083,936
Independent claim 6 is representative of Appellant's claimed
invention and is reproduced as follows:
6. An arc-extinguishing system for a contact switching
apparatus comprising:
a plurality of arc-extinguishing grid plates, arranged
outside a movable contact of the contact switching apparatus,
vertical to said moveable contact, and
an arc box and an arc cover, for covering said contact
switching apparatus and said arc-extinguishing grid plates;
wherein a gas blow-off opening section, formed by said arc
box and said arc cover, is opened at an angle with respect to a
top of the arc cover or sides of the arc box, to direct a flow of
gas discharged from the gas blow-off opening section.
References
The references relied on by the Examiner are as follows:
Mune 3,773,992 Nov. 20, 1973
Kakizoe et al. 4,596,909 Jun. 24, 1986
(Kakizoe)
Manthe et al. 5,756,951 May 26, 1998
(Manthe) (filed Sep. 23, 1996)
Rejections at Issue
Claims 6, 9 and 12 stand rejected under 35 U.S.C. § 103 as
being unpatentable over Kakizoe in view of Mune.
Claims 7 and 8 stand rejected under 35 U.S.C. § 103 as being
unpatentable over Kakizoe and Mune in view of Manthe.
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