US3763392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure method for producing an electrodeless plasma arc as a light source
Assignee: CHARYBDIS Inc
•
Filing: 1972-01-17
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Granted: 1973-10-02
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Expires: 1992-01-17
Abstract
Abstract Method of generating an electrodeless plasma arc as a light source including confining a plasma-forming gas such as xenon within a quartz sphere, pressurizing while confining the gas, and generating of power exteriorally of the container so as to develop an induction field extending through the container and into the gas such that the gas is ionized as a plasma arc within the container.
Inventors
- 👤 D Hollister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:18
CPC Classifications
H; H01; H01J; H01J65/00; H01J65/04; H01J65/042; H01J65/048; H05; H05H; H05H1/00; H05H1/24; H05H1/46
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
Method for producing an electrodeless plasma arc as a high intensity light source comprising: A. confining a plasma-forming gas within an electrodeless container; B. pressurizing said plasma forming gas to at least one atmosphere; C. generating radio-frequency electromagnetic energy exteriorally of said container, so as to develop magnetically an induction field extending through said container and into said gas, such gas is ionized as a plasma arc suspended within said container independently of the walls of said container; D. further including pressurizing said gas, limiting frequency and magnitude of induction field so that the discharge of said plasma arc is of lesser diameter than the diameter of said container.
Claim 2
Dependent Claim
109 words
Method for producing an electrodeless plasma arc as a high intensity light source comprising: A. confining a plasma-forming gas within an electrodeless container; B. pressurizing said plasma forming gas to at least one atmosphere; C. generating radio-frequency electromagnetic energy exteriorally of said container, so as to develop magnetically an induction field extending through said container and into said gas, such gas is ionized as a plasma arc suspended within said container independently of the walls of said container; D. further including pressurizing said gas, limiting frequency and magnitude of induction field so that the discharge of said plasma arc is of lesser diameter than the diameter of said container.
Claim 3
Dependent Claim
18 words
Method for producing an electrodeless plasma arc as in claim 1, wherein said plasma forming gas is xenon.
Claim 4
Dependent Claim
41 words
Method for producing an electrodeless plasma arc as in claim 2, wherein the gravitational buoyance of said ionized xenon is counteracted by use of a less dense, light background gas selected from the group consisting of argon, neon, helium, and hydrogen.
Claim 5
Dependent Claim
19 words
Method for producing an electrodeless plasma arc as in claim 1, wherein said plasma forming gas is mercury vapor.
Claim 6
Dependent Claim
21 words
Method for producing an electrodeless plasma arc as in claim 1, wherein said plasma forming gas is an alkali metal vapor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |