Title:
ELECTRODE OF VACUUM BREAKER
Document Type and Number:
WIPO Patent Application WO/1985/001148
Kind Code:
A1
Abstract:
An improvement in an electrode (5) of a vacuum breaker. The electrode is composed of a support electrode (52), an auxiliary support electrode (54) of Co brazed to the support electrode (52), and an electric contact portion (55) formed from a porous sintered member of Co which is filled with an electrically conductive alloy, the electric contact portion (55) being sintered to the surface of the auxiliary support electrode. The auxiliary support electrode (54) has a substrate portion (56), a projection (57), and a flange (58) formed at the projection. The substrate portion (56) prevents a brazing material (53), applied to braze together the support electrode, and the auxiliary support electrode, from entering the electrical contact portion (55), which would change the electrical and mechanical characteristics thereof. The projection and the flange serve to increase the bonding force between the auxiliary support electrode and the electric contact portion and to prevent separation due to thermal shock.
Inventors:
WATANABE RYUJI (JP)
SHIMIZU SEIKI (JP)
ANDO HISASHI (JP)
SHIMIZU SEIKI (JP)
ANDO HISASHI (JP)
Application Number:
PCT/JP1984/000419
Publication Date:
March 14, 1985
Filing Date:
August 31, 1984
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H01H1/02; H01H33/664; H01H33/66; H01H11/04; (IPC1-7): H01H33/66; H01H1/06
Foreign References:
| JPS4937165A | 1974-04-06 | |||
| JPS5942734A | 1984-03-09 | |||
| JPS585928A | 1983-01-13 | |||
| US3985512A | 1976-10-12 | |||
| US3828428A | 1974-08-13 | |||
| US3226517A | 1965-12-28 | |||
| JPS5619766Y2 | 1981-05-11 |
Other References:
See also references of EP 0155322A4
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