High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Vacuum
Patent
1994-03-07
1997-03-18
Gellner, Michael L.
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Vacuum
218128, 218129, 29880, H01H 3366
Patent
active
056125232
ABSTRACT:
A portion of a highly conductive metal member is infiltrated in voids of a porous high melting point metal member, and both the metal members are integrally joined to each other. An arc electrode portion 13 is formed of a high melting point area 11 in which the highly conductive metal is infiltrated in voids of the high melting point metal member. A coil electrode portion 14 is formed by hollowing out the interior of a highly conductive metal area 12 composed only of highly conductive metal and by forming slits 15 to 17 thereon. A rod 18 is hard-brazed on the rear surface of the coil electrode portion 14. With this electrode, it is possible to reduce the number of parts, and to omit the brazing portion between the arc electrode portion 13 and the coil electrode portion 14 for lowering the electric resistance and thereby the calorific value.
REFERENCES:
patent: 3960554 (1976-06-01), Gainer, Jr.
patent: 4629839 (1986-12-01), Falkingham
patent: 5099093 (1992-03-01), Schels et al.
patent: 5330702 (1994-07-01), Kippenberg et al.
Hakamata Yoshimi
Komuro Katsuhiro
Osaka Akira
Tanimizu Toru
Friedhofer Michael A.
Gellner Michael L.
Hitachi , Ltd.
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