Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
146 words
A vacuum circuit breaker of the type, in which a pair of electrodes each composed of a contact made of an alloy and having a sintered porous body impregnated with a conductive metal and a support electrode joined to said contact are arranged in an evacuated container to face each other, characterized: in that said contact includes an auxiliary support electrode joined to said support electrode and is composed of a sintered porous body joined by a sintering to said auxiliary support electrode and made of a conductive, refractory material and an alloy impregnating said sintered body; in that said auxiliary support electrode has a protrusion at the side where said composite metal is joined; and in that said protrusion is so shaped that a shearing force is generated at least a portion of said auxiliary support electrode against a force directed on the electrode axis.
Claim 2
Dependent Claim
146 words
A vacuum circuit breaker of the type, in which a pair of electrodes each composed of a contact made of an alloy and having a sintered porous body impregnated with a conductive metal and a support electrode joined to said contact are arranged in an evacuated container to face each other, characterized: in that said contact includes an auxiliary support electrode joined to said support electrode and is composed of a sintered porous body joined by a sintering to said auxiliary support electrode and made of a conductive, refractory material and an alloy impregnating said sintered body; in that said auxiliary support electrode has a protrusion at the side where said composite metal is joined; and in that said protrusion is so shaped that a shearing force is generated at least a portion of said auxiliary support electrode against a force directed on the electrode axis.
Claim 3
Dependent Claim
32 words
A vacuum circuit breaker as set forth in Claim 1, wherein said refractory material is composed mainly of one or two or more kinds of Fe, Ni, Co, Cr, Mo and Ta.
Claim 4
Dependent Claim
30 words
A vacuum circuit breaker as set forth in Claim 1, wherein said refractory material is composed mainly of one or two more kinds of carbines of Mo, W and Ta.
Claim 5
Dependent Claim
22 words
A vacuum circuit breaker as set forth in Claim 1, wherein said impregnating conductive metal is Cu or Ag or their alloy.
Claim 6
Dependent Claim
36 words
A vacuum breaker as set forth in Claim 4, wherein said impregnating conductive metal is at least one kind of Cu and Ag containing at least one kind of Pb, Bi, Te, Se, Sb and Cd.
Claim 7
Dependent Claim
24 words
6 . A vacuum breaker as set forth in Claim 5, . wherein said A g alloy is composed mainly of chalcogenide of Ag.
Claim 8
Dependent Claim
37 words
A vacuum breaker as set forth in Claim 1, wherein said sintered porous body has a porosity of 10 to 70 % , and wherein the impregnation of said conductive metal is conducted in a non-oxidizing atmosphere.
Claim 9
Dependent Claim
50 words
8 . A vacuum breaker as set forth in Claim 1, wherein said auxiliary support electrode is a sintered body of C o, wherein said refractory material is a sintered body of Co, and wherein said impregnating conductive metal is one of A g 2 Te or Ag 2 Se.
Claim 10
Dependent Claim
42 words
9 . A vacuum breaker as set forth in Claim 1, wherein the protrusion of said auxiliary support electrode is formed into such a small pulley shape that a flange at its end has a smaller diameter than that of a base.
Claim 11
Dependent Claim
30 words
10 . A vacuum breaker as set forth in Claim 1, wherein said auxiliary support electrode has such an annular protrusion as to have a flange at its end portion.
Claim 12
Dependent Claim
22 words
11 . A vacuum breaker as set forth in Claim 1, wherein said auxiliary support electrode is soldered to said support electrode.
Claim 13
Dependent Claim
24 words
A vacuum breaker as set forth in Claim 8, wherein said auxiliary support electrode is joined to said support electrode by an Ag solder.