High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Air-current blowout
Patent
1997-01-10
1998-11-17
Gellner, Michael L.
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Air-current blowout
H01H 3370
Patent
active
058379550
ABSTRACT:
The gas circuit breaker comprises a metal container filled with an insulating gas; first and second contacts disposed opposite each other in the metal container so that they can be brought into and out of engagement with each other; and a metal shield arranged in the metal container to enclose the two contacts. A part or a whole of the surface of the shield is oxidized and covered with a fluororesin layer. The gas circuit breaker with this construction can protect the shield surface against flaking and scores when subjected to mechanical impacts and can maintain high dielectric strength without increasing the size of the circuit breaker.
REFERENCES:
patent: 4403125 (1983-09-01), Yamaoka et al.
patent: 4791256 (1988-12-01), Yonezawa et al.
patent: 5039831 (1991-08-01), Sato et al.
patent: 5231256 (1993-07-01), Yamagiwa et al.
patent: 5347097 (1994-09-01), Bolongeat-Mobleu et al.
Daimon Goro
Nukaga Jun
Ohshita Youichi
Tsuchiya Kenji
Utsumi Tomoaki
Friedhofer Michael A.
Gellner Michael L.
Hitachi , Ltd.
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