US3665238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric gas discharge tube having vacuum tight sealing means for a plurality of supply leads positioned close together
Assignee: US Philips Corp
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Filing: 1970-06-11
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Granted: 1972-05-23
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Expires: 1990-06-11
Abstract
Abstract A gas discharge tube having intersecting conductors which are loosely situated in grooves of an insulating plate having open sides remote from the base of the tube. The insulating plate is kept urged against a window plate by a spring. The electrodes are connected to lead-in conductors placed close together in the base plate of the tube. The lead-in conductors pass through ceramic tubes inserted in the base plate of the tube and are vacuum sealed by means of a vitreous insulating material.
Inventors
- 👤 Johannes Van Esdonk
- 👤 Joannes Franciscus Mar Janssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:33
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
174 words
A gas discharge tube comprising a metal base plate, a window plate cooperating with said base plate to form a discharge space, and an electrode system comprising an insulating plate having a reentrant surface portion remote from said base plate within said discharge space wherein the reentrant surface portion of said insulating plate forms a plurality of open-ended grooves, a plurality of juxtaposed rod-shaped electrodes positioned within said grooves for providing discharges within said discharge spaces, a plurality of ceramic tubes extending through said base plate into said discharge space, a plurality of lead-in conductors within said ceramic tubes arranged so that the distance between centerlines of adjacent lead-in conductors is substantially equal to the distance between the centerlines of adjacent electrodes, a vitreous material for forming a vacuum tight connection between said lead-in conductors and said ceramic tubes, a plurality of flexible members for connecting each leadin conductor to an electrode, and resilient means positioned between confronting surfaces of said base and insulating plates for urging said insulating plate against said window plate.
Claim 2
Dependent Claim
174 words
A gas discharge tube comprising a metal base plate, a window plate cooperating with said base plate to form a discharge space, and an electrode system comprising an insulating plate having a reentrant surface portion remote from said base plate within said discharge space wherein the reentrant surface portion of said insulating plate forms a plurality of open-ended grooves, a plurality of juxtaposed rod-shaped electrodes positioned within said grooves for providing discharges within said discharge spaces, a plurality of ceramic tubes extending through said base plate into said discharge space, a plurality of lead-in conductors within said ceramic tubes arranged so that the distance between centerlines of adjacent lead-in conductors is substantially equal to the distance between the centerlines of adjacent electrodes, a vitreous material for forming a vacuum tight connection between said lead-in conductors and said ceramic tubes, a plurality of flexible members for connecting each leadin conductor to an electrode, and resilient means positioned between confronting surfaces of said base and insulating plates for urging said insulating plate against said window plate.
Claim 3
Dependent Claim
34 words
A gas discharge tube as claimed in claim 1 wherein said plurality of juxtaposed rod-shaped electrodes comprises at least two sets of electrodes, the electrodes of each set intersecting each other at an angle.
Claim 4
Dependent Claim
32 words
A gas discharge tube as claimed in claim 1 wherein the distance between the centerlines of the lead-in conductors is 1.4 mm. and the diameter of the lead-in conductor is 0.6 mm.
Claim 5
Dependent Claim
39 words
A gas discharge tube as claimed in claim 1 wherein the reentrant surface portion of said insulating plate forms at least two groups of open-ended grooves intersecting each other at an angle, each group having a different groove depth.
Claim 6
Dependent Claim
218 words
A gas discharge tube comprising a metal base plate, a window plate cooperating with said base plate to form a discharge space and an electrode system comprising a plurality of insulating plates within said discharge space, each of said insulating plates having a reentrant surface portion remote from said base plate wherein the reentrant surface portion forms at least two groups of open-ended grooves intersecting each other at an angle, a plurality of groups of juxtaposed rod-shaped electrodes within said grooves, each of said electrodes in the same group lying in the same plane positioned at one depth within said grooves and each of said electrodes in the other group lying in the same plane positioned at a second depth within said grooves, a plurality of ceramic tubes extending through said base plate into said discharge space, a plurality of lead-in conductors within said ceramic tubes arranged so that the distance between centerlines of adjacent lead-in conductors is substantially equal to the distance between the centerlines of adjacent electrodes lying in the same plane, a vitreous material for forming a vacuum-tight connection between said lead-in conductors and said ceramic tubes, a plurality of flexible members for connecting each lead-in conductor to an electrode, and resilient means for urging said insulating plates against each other and said window plate.
Claim 7
Dependent Claim
218 words
A gas discharge tube comprising a metal base plate, a window plate cooperating with said base plate to form a discharge space and an electrode system comprising a plurality of insulating plates within said discharge space, each of said insulating plates having a reentrant surface portion remote from said base plate wherein the reentrant surface portion forms at least two groups of open-ended grooves intersecting each other at an angle, a plurality of groups of juxtaposed rod-shaped electrodes within said grooves, each of said electrodes in the same group lying in the same plane positioned at one depth within said grooves and each of said electrodes in the other group lying in the same plane positioned at a second depth within said grooves, a plurality of ceramic tubes extending through said base plate into said discharge space, a plurality of lead-in conductors within said ceramic tubes arranged so that the distance between centerlines of adjacent lead-in conductors is substantially equal to the distance between the centerlines of adjacent electrodes lying in the same plane, a vitreous material for forming a vacuum-tight connection between said lead-in conductors and said ceramic tubes, a plurality of flexible members for connecting each lead-in conductor to an electrode, and resilient means for urging said insulating plates against each other and said window plate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |