High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Resistance inserting
Patent
1994-07-15
1996-04-23
Lateef, Marvin M.
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Resistance inserting
338 20, 338 21, 338225, 252502, 252503, 252506, H01H 3316, H01C 710, H01C 800
Patent
active
055095585
ABSTRACT:
A metal oxide resistor for suppressing variations in resistivity in use in an atmosphere at a high temperature or humidity. Such a metal oxide resistor includes a sintered body in which carbon particles having an average grain size of 1 .mu.m or less exist in the grain boundaries of metal oxide particles in an amount of 0.05 to 3 wt %, and electrodes formed on at least two opposing surfaces of the sintered body.
REFERENCES:
patent: 4418327 (1983-11-01), Palilla et al.
patent: 5219494 (1993-06-01), Ambros et al.
patent: 5254816 (1993-10-01), Shutoh et al.
patent: 5373129 (1994-12-01), Shutoh et al.
Database WPI, Derwent Publications, AN 85-022142, JP-A-59 217 668, Dec. 7, 1984.
Database WPI, Derwent Publications, AN 82-36310, JP-A-57 052 101, Mar. 27, 1982.
Imai Motomasa
Katsumura Yuji
Kobayashi Masaki
Oh-Ishi Katsuyoshi
Ohkuma Hideo
Kabushiki Kaisha Toshiba
Lateef Marvin M.
Toshiba Tungaloy Co., Ltd.
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