Patent US4572797A successfully refreshed from Google Patents.
US3775641A
Expired / Lapsed
US
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Method of and apparatus for flash discharge
Assignee: SCIENT INSTR Inc
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Filing: 1972-05-30
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Granted: 1973-11-27
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Expires: 1992-05-30
Abstract
Abstract This disclosure is concerned with increasing the reliability of triggering a discharge between a pair of electrodes in a gasdischarge tube or the like, by generating, apart from the triggering, an intense electric field adjacent one of the electrodes (but outside the discharge region), while substantially inhibiting arcing during such generation.
Inventors
- 👤 J Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:00
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/54; H01J61/545
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
199 words
Flash-discharge apparatus having, in combination, a gasfilled envelope, a pair of elongated spaced principal electrodes disposed within the envelope and defining a gas-discharge region in the space between opposing free ends thereof, trigger electrode means disposed near said region, electric-field intensification electrode means disposed along a portion of one of the principal electrodes from a point inward of the free end of said one principal electrode and with insulating means disposed between the intensification electrode means and said one principal electrode, the said insulating means extending beyond said point toward the free end of said one principal electrode sufficiently substantially to obscure the end of the intensification electrode means at said point from the free end of said one principal electrode in order to discourage the generation of an arc therebetween, means for applying voltage-tobe-discharged between said principal electrodes, and means for substantially simultaneously applying trigger voltage to said trigger electrode means and voltage between said intensification and one of the principal electrodes for developing an intense electric field that, while inhibiting arcing therebetween, causes the effects of said field to aid in said triggering and thus to produce the flash-discharge between said principal electrodes in said gas-discharge region.
Claim 2
Dependent Claim
199 words
Flash-discharge apparatus having, in combination, a gasfilled envelope, a pair of elongated spaced principal electrodes disposed within the envelope and defining a gas-discharge region in the space between opposing free ends thereof, trigger electrode means disposed near said region, electric-field intensification electrode means disposed along a portion of one of the principal electrodes from a point inward of the free end of said one principal electrode and with insulating means disposed between the intensification electrode means and said one principal electrode, the said insulating means extending beyond said point toward the free end of said one principal electrode sufficiently substantially to obscure the end of the intensification electrode means at said point from the free end of said one principal electrode in order to discourage the generation of an arc therebetween, means for applying voltage-tobe-discharged between said principal electrodes, and means for substantially simultaneously applying trigger voltage to said trigger electrode means and voltage between said intensification and one of the principal electrodes for developing an intense electric field that, while inhibiting arcing therebetween, causes the effects of said field to aid in said triggering and thus to produce the flash-discharge between said principal electrodes in said gas-discharge region.
Claim 3
Dependent Claim
42 words
Flash-discharge apparatus as claimed in claim 1 and in which said insulating means is disposed about said one principal electrode and the intensification electrode means is disposed about said insulating means, being only mechanically secured to a portion thereof to prevent wandering.
Claim 4
Dependent Claim
23 words
Flash-discharge apparatus as claimed in claim 2 and in which said insulating and intensification electrode means are coaxial with said one principal electrode.
Claim 5
Dependent Claim
17 words
Flash-discharge apparatus as claimed in claim 1 and in which said one principal electrode is an anode.
Claim 6
Dependent Claim
17 words
Flash-discharge apparatus as claimed in claim 1 and in which said one principal electrode is a cathode.
Claim 7
Independent Claim
82 words
A method of producing flash-discharge in a region of a gas between a pair of electrodes, that comprises, applying a voltage-to-be-discharged between the electrodes, triggering the breakdown of the gas in said region to enable such discharge, and, during the triggering and apart therefrom, generating an intense electric field outside said region in the immediate vicinity of one of the electrodes while suppressing arcing to said one electrode under the influence of said field, to improve the reliability of the triggering breakdown.
Claim 8
Independent Claim
82 words
A method of producing flash-discharge in a region of a gas between a pair of electrodes, that comprises, applying a voltage-to-be-discharged between the electrodes, triggering the breakdown of the gas in said region to enable such discharge, and, during the triggering and apart therefrom, generating an intense electric field outside said region in the immediate vicinity of one of the electrodes while suppressing arcing to said one electrode under the influence of said field, to improve the reliability of the triggering breakdown.
Claim 9
Dependent Claim
41 words
A method as claimed in claim 6 and in which said one electrode is elongated and said intense electric field is developed parallel to said one electrode along a substantial portion thereof but remote and obScured from the discharge end thereof.
Claim 10
Dependent Claim
178 words
Flash-discharge apparatus having, in combination, a gas-filled envelope, a pair of elongated spaced principal electrodes disposed within the envelope and defining a gas-discharge region in the space between opposing free ends thereof, trigger electrode means disposed near said region, electric-field intensification electrode means disposed along a portion of one of the principal electrodes from a point spaced from the free end of said one principal electrode, insulating means disposed between the intensification electrode means and said one principal electrode for obscuring the end of the intensification electrode means at said point from the free end of said one principal electrode in order to discourage the generation of an arc therebetween, means for applying voltage-to-be-discharged between said principal electrodes, and means for substantially simultaneously applying trigger voltage to said trigger electrode means and voltage between said intensification and one of the principal electrodes for developing an intense electric field that, while inhibiting arcing therebetween, causes the effects of said field to aid in said triggering and thus to produce the flash-discharge between said principal electrodes in said gas-discharge region.
Claim 11
Dependent Claim
178 words
Flash-discharge apparatus having, in combination, a gas-filled envelope, a pair of elongated spaced principal electrodes disposed within the envelope and defining a gas-discharge region in the space between opposing free ends thereof, trigger electrode means disposed near said region, electric-field intensification electrode means disposed along a portion of one of the principal electrodes from a point spaced from the free end of said one principal electrode, insulating means disposed between the intensification electrode means and said one principal electrode for obscuring the end of the intensification electrode means at said point from the free end of said one principal electrode in order to discourage the generation of an arc therebetween, means for applying voltage-to-be-discharged between said principal electrodes, and means for substantially simultaneously applying trigger voltage to said trigger electrode means and voltage between said intensification and one of the principal electrodes for developing an intense electric field that, while inhibiting arcing therebetween, causes the effects of said field to aid in said triggering and thus to produce the flash-discharge between said principal electrodes in said gas-discharge region.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |