Patent US3848099A successfully refreshed from Google Patents.
US3848099A
Expired / Lapsed
US
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Circuit breakers for heavy currents
Assignee: Bpifrance Financement SA
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Filing: 1972-05-31
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Granted: 1974-11-12
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Expires: 1992-05-31
Abstract
Abstract The circuit breaker comprises two coaxial conductor elements each having a free end in a same transverse plane, an annular hollow between these two elements, a conductive plate applied against the ends of the two conductors and explosive means to apply high pressure on the plate, which cuts off or bursts this plate at the zone of the hollow. An explosable element is mounted in parallel on the plate.
Inventors
- 👤 R Christian
- 👤 D Francoise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:57
CPC Classifications
H; H01; H01H; H01H39/00; H01H39/006; H01H33/00; H01H33/02; H01H33/04; H01H33/16
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
143 words
Rapid circuit breaker for a heavy electric current comprising: two parallel conductors one of which surrounds the other, connected respectively to two portions forming the conducting line to be broken and having both one axial end in a same transverse plane P, an insulating sleeve interposed radially between these two elements and hollowed on this side of the plane P by an annular cup open in the direction of this plane, a conducting plate applied on the concentric terminal bearing surfaces, of the two conducting elements, situated in the plane P, and means for suddenly generating a high pressure on the outer surface of the plate at the desired moment for breaking the current so as to cut out or burst this plate annularly between the two conductor elements and project the cut out or burst portion towards the bottom of the cup.
Claim 2
Dependent Claim
143 words
Rapid circuit breaker for a heavy electric current comprising: two parallel conductors one of which surrounds the other, connected respectively to two portions forming the conducting line to be broken and having both one axial end in a same transverse plane P, an insulating sleeve interposed radially between these two elements and hollowed on this side of the plane P by an annular cup open in the direction of this plane, a conducting plate applied on the concentric terminal bearing surfaces, of the two conducting elements, situated in the plane P, and means for suddenly generating a high pressure on the outer surface of the plate at the desired moment for breaking the current so as to cut out or burst this plate annularly between the two conductor elements and project the cut out or burst portion towards the bottom of the cup.
Claim 3
Dependent Claim
37 words
Breaker according to claim 1, wherein the terminal bearing surface, of at least one of the two conductor elements, which extends in the plane P, is connected to this element along an edge with a sharp angle.
Claim 4
Dependent Claim
35 words
Breaker according to claim 2, wherein the plate is constituted by a relatively thick sheet thinned locally by a circular groove constituting a breakage initiator in line with one at least of the sharp edges.
Claim 5
Dependent Claim
39 words
Breaker according to claim 1, wherein the high pressure generating means comprise a closed chamber connected to the plate and containing a gaseous detonating mixture, and electrical device adapted to initiate the explosion of this mixture in this chamber.
Claim 6
Dependent Claim
33 words
Breaker according to claim 4, wherein the detonating mixture is composed by one part by volume of oxygen and two parts by volume of hydrogen at a pressure of several tens of bars.
Claim 7
Dependent Claim
25 words
Breaker according to claim 4, wherein a volume of electrically insulating material is interposed between the outer surface of the plate and the detonating mixture.
Claim 8
Dependent Claim
21 words
Breaker according to claim 6, wherein the volume of insulating material is separated from the detonating mixture by a fluid-tight diaphragm.
Claim 9
Dependent Claim
34 words
Breaker according to claim 7, wherein the insulating material is a fluid, associated with means for causing said material to circulate in a close system successively along the plate and in a cooling device.
Claim 10
Dependent Claim
41 words
Breaker according to claim 1, wherein an element of electrical resistance very much higher than that of the plate and capable of being destroyed by explosion when it is traversed by an excessive current, is mounted in parallel on said plate.
Claim 11
Dependent Claim
26 words
Rapid opening heavy current breaker, comprising several elemental breakers constructed according to claim 9 and mounted in series with their explosive elements themselves mounted in series.
Claim 12
Dependent Claim
42 words
Rapid opening heavy current breaker, comprising several elemental breakers according to claim 9 mounted each in series with a choke, the assemblies constituted respectively by each elemental breaker and its choke being mounted in parallel between the two portions constituting the line.
Claim 13
Dependent Claim
57 words
Rapid opening heavy current breaker, comprising an assembly of elemental breakers with explosive elements and chokes mounted in parallel according to claim 11, the assembly itself being mounted in series with several elemental breakers, without explosive elements, mounted in series, an explosive element being mounted in parallel with the whole between the two sections constituting the line.
Claim 14
Dependent Claim
26 words
Rapid opening heavy electric current breaker, according to claim 9, wherein the electrical resistance element is mounted outside the Enclosure in which said plate is located.
References Cited (Backward Citations)
US3264438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |