Patent US3681639A successfully refreshed from Google Patents.
US3681639A
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US
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Glow discharge starter tube with hydrocarbon-rare gas fill
Assignee: Toshiba Corp
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Filing: 1970-09-09
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Granted: 1972-08-01
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Expires: 1990-09-09
Abstract
Abstract A glow discharge starter tube having within a sealed envelope gaseous atmosphere consisting of a rate gas and a gaseous hydrocarbon.
Inventors
- 👤 Taketo Kamei
- 👤 Kouichi Miyazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:49
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/12; H01J61/14; H01J17/00; H01J17/02; H01J17/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
57 words
The glow discharge starter tube according to claim 1 wherein said rare gas is argon, said hydrocarbon is one selected from methane, ethane and propane, and the mixture is filled at a pressure of about 10 to 70 millimeters of mercury, the argon-hydrocarbon ratio of said mixture being 40 to 99: 60 to 1 in volume percent.
Claim 2
Dependent Claim
26 words
The glow discharge starter tube according to claim 2 wherein the pressure of said argon and hydrocarbon mixture is about 30 to 50 millimeters of mercury.
Claim 3
Dependent Claim
27 words
The glow discharge starter tube according to claim 2 wherein said hydrocarbon is propane and the mixture is filled at a pressure of 20 millimeters of mercury.
Claim 4
Dependent Claim
57 words
The glow discharge starter tube according to claim 1 wherein said rare gas is neon, said hydrocarbon being one selected from methane, ethane and propane, and mixed gas filling at a pressure of about 40 to 110 millimeters of mercury, the neon-hydrocarbon ratio of said mixture being 95 to 99.9 : 5 to 0.1 in volume percent.
Claim 5
Dependent Claim
24 words
The glow discharge starter tube according to claim 5 wherein the pressure of said neon and hydrocarbon mixture is at 70 millimeters of mercury.
Claim 6
Dependent Claim
95 words
A glow discharge tube comprising in combination: a. a sealed envelope; b. a stationary first electrode within said envelope; c. a thermo-movable metallic second electrode in make and break contact with said first electrode having a make contact period depending on the quantity of carbon oxides within said envelope, and, d. means for regulating said carbon oxide quantity comprising a mixture of a rare gas and a hydrocarbon gas at a pressure as 10 to 110 millimeters of mercury, the ratio of rare gas to hydrocarbon gas being between 40:60 and 99.9:0.1 in volume percent.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |