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US 4,011,426 AGranted
Device with arc-extinguishing system
OwnerEmil Langeinventor
Life of this patent
Estimating the term…
Abstract
A device for extinguishing electric arcs, especially a circuit interrupter, in which electrodes and/or other parts are used for striking an arc during the circuit opening, which consist at least in part of metallic and non-metallic elements producing reaction products under the heat of the arc serving as arc-extinguishing media, and in which an additional non-metallic component for the reduction of the current is added or admixed to such electrodes or parts or is included in the form of auxiliary electrodes or parts for the same purpose; a preferred non-metallic component for reduction of the current is silicon dioxide (SiO.sub.2).
Claims21
A device for extinguishing electric arcs comprising:
- a first electrode, and
- a second electrode
- wherein
- an electric arc burns between said first and second electrodes,
- said first electrode is composed of
- a metallic substance providing said first electrode with electrical conductivity, and
- a non-metallic substance having the property of giving off a volatile, arc extinguishing gas due to the heat of the electric arc, and
- said second electrode is composed of
- a metallic substance providing said second electrode with electrical conductivity, and
- a non-metallic inorganic substance having a melting point higher than the melting point of the non-metallic substance of which said first electrode is composed, said non-metallic inorganic substance having the property of reducing current flow while itself giving off no volatile arc-extinguishing gases.
7 more elements
A device for extinguishing electric arcs comprising:
- first and second electrodes displaceable with respect to one another with a first electric arc being established therebetween;
- and
- third and fourth electrodes displaceable with respect to one another with a second electric arc being established therebetween;
- wherein
- each of said first and second electrodes is composed of
- a metallic substance providing said first and second electrodes with electrical conductivity, and
- a non-metallic substance having the property of giving off a volatile, arc extinguishing gas due to the heat of said first electric arc, and
- each of said third and fourth electrodes is composed of
- a metallic substance providing said third and fourth electrodes with electrical conductivity, and
- a non-metallic inorganic substance having a melting point higher than the melting point of the non-metallic substance of which said first and second electrodes are composed, said non-metallic inorganic substance having the property of reducing current flow while itself giving off no volatile, arc-extinguishing gases.
7 more elements
A device for extinguishing electric arcs comprising
- first, second and third electrodes, said second electrode being displaceable with respect to said first and third electrodes, with an electric arc being established between said first and second electrodes when said second electrode is in the proximity of said first electrode and said electric arc being transferred from between said first and second electrodes to between said second and third electrodes when said second electrode is displaced away from the proximity of said first electrode to the proximity of said third electrode, and
- wherein
- a portion of each of said first, second and third electrodes is composed of
- a metallic substance providing said first, second and third electrodes with electrical conductivity, and
- a non-metallic substance having the property of giving off a volatile, arc-extiguishing gas due to the heat of said electric arc, and wherein
- a portion of at least one of said electrodes is composed of
- a metallic substance providing said at least one of said electrodes with electrical conductivity;
- and
- a non-metallic inorganic substance having a melting point higher than the melting point of said non-metallic substance, said non-metallic inorganic substance having the property of reducing current flow while itself giving off no volatile, arc-extinguishing gases.
6 more elements
A device for extinguishing electric arcs comprising
- a first electrode, and
- a second electrode,
- wherein
- an electric arc burns between said first and second electrodes,
- said first electrode being composed of a solid mixture of a prescribed amount by weight of a non-metallic particulate substance which has the property of giving off a volatile, arc extinguishing gas due to the heat of said electric arc, a prescribed amount by weight of a metallic particulate substance providing said first electrode with electrical conductivity, and a prescribed amount by weight of a resin which binds said metallic and non-metallic particulate substances together to form said first electrode, and
- said second electrode being composed of a solid mixture of a prescribed amount by weight of a non-metallic inorganic particulate substance having a melting point higher than the non-metallic particulate substance of which said first electrode is composed and which has the property of reducing current flow, while itself giving off no volatile, arc-extinguishing gases due to the heat of said electric arc, a prescribed amount by weight of a metallic particulate substance providing said second electrode with electrical conductivity, and a prescribed amount by weight of a resin which binds said metallic and non-metallic inorganic particulate substances together to form said second electrode.
3 more elements
A device for extinguishing electric arcs comprising
- a first electrode, and
- a second electrode,
- wherein
- an electric arc burns between said first and second electrodes,
- said first electrode being composed of a solid mixture of 10 parts by weight of a non-metallic particulate substance which has the property of giving off a volatile, arc extinguishing gas due to the heat of said electric arc, 44 or 60-65 parts by weight of a metallic particulate substance providing said first electrode with electrical conductivity, and 14.5 parts by weight of a resin which binds said metallic and non-metallic particulate substances together to form said first electrode, and
- said second electrode being composed of a solid mixture of 30 parts by weight of a non-metallic inorganic particulate substance having a melting point higher than the non-metallic particulate substance of which said first electrode is composed and which has the property of reducing current flow, while itself giving off no volatile, arc-extinguishing gases due to the heat of said electric arc, 44 parts by weight of a metallic particulate substance providing said second electrode with electrical conductivity, 10 parts by weight of a non-metallic particulate substance which has the property of giving off a volatile, arc extinguishing gas due to the heat of said electric arc, and 14.5 parts by weight of a resin which binds said metallic and non-metallic inorganic particulate substances together to form said second electrode.
3 more elements
Dependencies are inferred from the claim text.