High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Air-current blowout
Reexamination Certificate
2007-07-18
2009-11-17
Luebke, Renee S (Department: 2833)
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Air-current blowout
C218S057000
Reexamination Certificate
active
07619177
ABSTRACT:
An electrical switching apparatus is disclosed with a moveable insulating nozzle for blowing an arc. According to the invention, the insulating nozzle is connected in an interlocking and force-fitting manner to at least one moveable component part of the switching apparatus by means of a clamping device and without a screw connection. Exemplary embodiments relate, inter alia, to: a clamping hold of the insulating nozzle on the moving buffer cylinder and/or at the opposite end on a part to be moved, in particular a moveable shielding electrode or an auxiliary gear mechanism for a contact system, which is driven on both sides. Advantages include: simple fitting of the insulating nozzle, small physical volume of the clamping device; precise coaxial fixing of the insulating nozzle in relation to the switch axis.
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English language version of Form PCT/IB/409 (International Preliminary Report on Patentability), Aug. 8, 2006.
Form PCT/ISA/210 (International Search Report) dated Apr. 3, 2006.
Form PCT/ISA/237 (Written Opinion of the International Searching Authority), Aug. 8, 2006.
Form PCT/IPEA/409 (International Preliminary Report on Patentability) dated Aug. 8, 2006.
European Search Report (with English translation of category of cited documents) dated Sep. 21, 2005.
Borg Tomas
Hunger Olaf
Nordstrom Thomas
Saxl David
Strom Tomas
ABB Technology AG
Buchanan & Ingersoll & Rooney PC
Fishman Marina
Luebke Renee S
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