US3705319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeless gas discharge devices employing tritium as a source of ions to prime the discharge
Assignee: Westinghouse Electric Corp
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Filing: 1971-08-18
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Granted: 1972-12-05
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Expires: 1991-08-18
Abstract
Abstract An electrodeless, halogen gas microwave-induced discharge device, particularly adapted for use as a power limiter stage, which has no wires connected to it. Incorporated into the discharge device is a free electron emitter comprising tritium adsorbed into a layer of material such as titanium or yttrium. The tritium yields sufficient initiatory electrons to prime the microwave gap so as to yield a short interval for radio-frequency breakdown of the gas, and to yield repeatable discharge characteristics with each incident radio-frequency pulse.
Inventors
- 👤 Harry Goldie
- 👤 Michael Goldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:55
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/006; H01; H01J; H01J17/00; H01J17/02; H01J17/30; H01J17/32; H01J65/00; H01J65/04; H01J65/042; H01J65/048
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
14 words
The gaseous discharge device of claim 1 wherein said capsule is formed from quartz.
Claim 2
Dependent Claim
47 words
The gaseous discharge device of claim 2 wherein said material selected from the group consisting of titanium and yttrium is deposited on an interior surface of said quartz capsule, and a layer of silicon dioxide covering said material selected from the group consisting of titanium and yttrium.
Claim 3
Dependent Claim
53 words
The gaseous discharge device of claim 3 wherein said layer of material selected from the group consisting of titanium and yttrium has a thickness in the range of about 7,000 to 12,000 Angstrom units and said layer of silicon dioxide has a thickness in the range of about 1,000 to 3,000 Angstrom units.
Claim 4
Dependent Claim
14 words
The gaseous discharge device of claim 1 wherein said ionizable gas is a halogen.
Claim 5
Dependent Claim
13 words
The gaseous discharge device of claim 5 wherein said ionizable gas comprises chlorine.
Claim 6
Dependent Claim
39 words
The gaseous discharge device of claim 1 wherein said capsule has an upper cup-shaped portion and a lower downwardly-extending capillary portion disposed in a gap formed by an aperture in an iris plate extending transversely across a wave guide.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |