High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Vacuum
Reexamination Certificate
2011-05-10
2011-05-10
Luebke, Renee (Department: 2833)
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Vacuum
C218S118000
Reexamination Certificate
active
07939777
ABSTRACT:
The disclosure relates to a vacuum interrupter chamber having an insulating ceramic wall, within which contact pieces which move in a vacuum are arranged and are surrounded by a screen between the contact piece and the interrupter chamber wall. In order in this case to improve on the one hand the erosion resistance of the screen and on the other hand the dielectric strength of the arrangement, the disclosure proposes that coatings composed of high-melting-point material or composed of refractory metals be fitted at least partially in the area of the screen or other components within the vacuum interrupter chamber.
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Dullni Edgar
Gentsch Dietmar
Kaltenegger Kurt
ABB Technology AG
Buchanan & Ingersoll & Rooney PC
Fishman Marina
Luebke Renee
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