High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Air-current blowout
Reexamination Certificate
2005-08-09
2005-08-09
Easthom, Karl D. (Department: 2832)
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Air-current blowout
C218S154000
Reexamination Certificate
active
06927355
ABSTRACT:
The invention relates to a circuit breaker, preferably for high or medium voltage. The movable conact of each breaker pole is connected, via mechanical means for transmitting movement, to a movable part of an electric motor (6). The movable contact and the means for transmitting movement are arranged in a gas-tight apparatus chamber (31) surrounded by a gas-tight apparatus housing (9) of insulating material such as porcelain. In accordance with the invention the motor (6) is arranged entirely in the apparatus chamber (31). The invention also relates to an electric plant provided with the breaker claimed, uses of the breaker claimed and a method of breaking electric current in which the breaker claimed is used.
REFERENCES:
patent: 3801768 (1974-04-01), Meyer
patent: 4223191 (1980-09-01), Calvino
patent: 4250362 (1981-02-01), Cookson
patent: 4379957 (1983-04-01), Calvino
patent: 5756952 (1998-05-01), Thuries
patent: 5932858 (1999-08-01), Meinherz
Hermansson Lars
Roininen Tomas
Thuresson Per Olof
Valdermarsson Stefan
ABB AB
Easthom Karl D.
Fishman M.
Franklin Eric J.
Venable LLP
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