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US4267484A
Expired / Lapsed
US
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Parallel multi-electrode spark gap switch
Assignee: United States Department of the Air Force
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Filing: 1979-08-28
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Granted: 1981-05-12
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Expires: 1999-08-28
Abstract
Abstract A spark gap switching device for high peak currents including a pair of main electrodes with protruding, opposing sub-electrodes, surrounded by high permeability cores typically of ferrite material. Small air gaps separate the sub-electrodes. The switch is activated by an over voltage or the like causing one of the sub-electrodes to breakover producing a flux time rate of change in the core. A voltage is induced in the non conducting sub-electrodes causing aligned pairs to rapidly increase in potential difference until one by one they all conduct.
Inventors
- 👤 James P. O'Loughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:09
CPC Classifications
H; H01; H01J; H01J17/00; H01T; H01T4/00; H01T4/10; H01J2893/00; H01J2893/0059
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
87 words
A spark gap switching device comprising first and second electrodes of conductive material, each said electrode being cylindrical in shape and terminating in a plurality of spaced juxtaposed rod shaped sub-electrodes of conductive material extending perpendicularly from an end surface thereof, said electrodes being positioned such that the ends of the sub-electrodes of each electrode are in close proximity and in register with the ends of corresponding sub-electrodes of the other electrode forming spark gaps therebetween, and means for effecting substantial saturable mutual inductance between adjacent sub-electrodes.
Claim 2
Dependent Claim
87 words
A spark gap switching device comprising first and second electrodes of conductive material, each said electrode being cylindrical in shape and terminating in a plurality of spaced juxtaposed rod shaped sub-electrodes of conductive material extending perpendicularly from an end surface thereof, said electrodes being positioned such that the ends of the sub-electrodes of each electrode are in close proximity and in register with the ends of corresponding sub-electrodes of the other electrode forming spark gaps therebetween, and means for effecting substantial saturable mutual inductance between adjacent sub-electrodes.
Claim 3
Dependent Claim
31 words
A spark gap switching device as defined in claim 1 wherein said means for effecting saturable mutual inductance comprises a core of high permeability material surrounding the sub-electrodes of each electrode.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |