Patent US3710178A successfully refreshed from Google Patents.
US3710178A
Expired / Lapsed
US
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Spark-gap triggering system
Assignee: SRI International Inc
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Filing: 1970-09-14
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Granted: 1973-01-09
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Expires: 1990-09-14
Abstract
Abstract A triggerable spark-gap is provided wherein the main gap discharge time is controlled by placing an auxiliary pair of discharge electrodes inside one of the main gap electrodes and causing a discharge for emitting ultra-violet light. The ultraviolet light illuminates the region in which the main discharge channel will form through a small aperture in the one of the main electrodes within which the auxiliary pair of electrodes are placed.
Inventors
- 👤 D Johnson
- 👤 A Wickersham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:57
CPC Classifications
H; H01; H01T; H01T2/00; H01T2/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
A system for controlling an electrical discharge in the gap provided between a pair of spaced aligned main electrodes comprising: a chamber within one of said main electrodes positioned at the side thereof closest to the other of said main electrodes, an entrance opening into said chamber extending from the side of said one of said two electrodes adjacent said gap, said entrance opening being small relative to the size of said chamber, a pair of auxiliary electrodes positioned within said chamber, said auxiliary electrodes being positioned spaced from one Another to form a gap therebetween and being substantially axially aligned with said entrance opening, insulating means for supporting said auxiliary electrodes within said chamber, and means for energizing said main and auxiliary electrodes whereby a spark is formed in the gap between said main electrode upon energization of said auxiliary electrodes.
Claim 2
Independent Claim
142 words
A system for controlling an electrical discharge in the gap provided between a pair of spaced aligned main electrodes comprising: a chamber within one of said main electrodes positioned at the side thereof closest to the other of said main electrodes, an entrance opening into said chamber extending from the side of said one of said two electrodes adjacent said gap, said entrance opening being small relative to the size of said chamber, a pair of auxiliary electrodes positioned within said chamber, said auxiliary electrodes being positioned spaced from one Another to form a gap therebetween and being substantially axially aligned with said entrance opening, insulating means for supporting said auxiliary electrodes within said chamber, and means for energizing said main and auxiliary electrodes whereby a spark is formed in the gap between said main electrode upon energization of said auxiliary electrodes.
Claim 3
Dependent Claim
28 words
Apparatus as recited in claim 1 wherein said auxiliary electrodes are made of carbon and said gap between said main electrodes is enclosed and filled with nitrogen gas.
Claim 4
Dependent Claim
21 words
Apparatus as recited in claim 1 wherein a piece of barium titinate is positioned in the space between said auxiliary electrodes.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |