High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Air-current blowout
Reexamination Certificate
2008-12-19
2011-10-11
Nguyen, Truc (Department: 2833)
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Air-current blowout
C218S068000, C218S079000
Reexamination Certificate
active
08035054
ABSTRACT:
A vacuum insulated switchgear having a vacuum container, a fixed contact disposed in the vacuum container, a movable contact disposed in the vacuum container capable of being in contact with or out of contact with the fixed contact, a driving mechanism for driving the movable contact in directions to contact with and out of contact with the fixed contact, a resin portion molded around the vacuum container, an insulative bushing for covering a pulled-out portion of a conductor connected to the fixed contact and for extending from the molded resin portion, and a cable head insulating member for covering a conductor of a cable head connected to the conductor at the pulled-out portion and an outer surface of the cable head insulating member being earthed, characterized in that:an earthed conductive member is embedded at least at a position opposite to an end of the cable head insulating member in the bushing.
REFERENCES:
patent: 4587390 (1986-05-01), Gray
patent: 6242708 (2001-06-01), Marchand et al.
patent: 6504125 (2003-01-01), Nishitani
patent: 2005-354880 (2005-12-01), None
patent: 2006-320196 (2006-11-01), None
patent: 2007-014086 (2007-01-01), None
patent: 2007-014087 (2007-01-01), None
patent: 2007-97376 (2007-04-01), None
Kobayashi Masato
Morita Ayumu
Ozawa Hiroyuki
Tsuchiya Kenji
Hitachi , Ltd.
Mattingly & Malur, PC
Nguyen Truc
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