US5055741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid coolant for high power microwave excited plasma tubes
Assignee: United States Department of the Air Force
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Filing: 1990-07-13
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Granted: 1991-10-08
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Expires: 2010-07-13
Abstract
Abstract A coolant system for a high power microwave excited plasma tube is described which comprises liquid dimethyl polysiloxane in a coolant system structure for flowing the liquid into contact with the plasma tube, the system structure comprising metallic or hard plastic materials.
Inventors
- 👤 LaVerne A. Schlie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:39
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/24; H01J7/26; H01J23/00; H01J23/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
97 words
A coolant system for a high power microwave excited plasma tube which comprises: (a) a source of clean liquid dimethyl polysiloxane, said clean liquid dimethyl polysiloxane being dopted with an infrared absorbing material selected from the group consisting of organic and inorganic solvents; (b) means for circulating said clean liquid dimethyl polysiloxane into heat exchange relationship with said plasma tube; and (c) wherein the containment materials comprising said source of said clean liquid dimethyl polysiloxane and comprising said circulating means is selected from the group consisting of a metallic material, a hard plastic, glass, pyrex and quartz.
Claim 2
Dependent Claim
97 words
A coolant system for a high power microwave excited plasma tube which comprises: (a) a source of clean liquid dimethyl polysiloxane, said clean liquid dimethyl polysiloxane being dopted with an infrared absorbing material selected from the group consisting of organic and inorganic solvents; (b) means for circulating said clean liquid dimethyl polysiloxane into heat exchange relationship with said plasma tube; and (c) wherein the containment materials comprising said source of said clean liquid dimethyl polysiloxane and comprising said circulating means is selected from the group consisting of a metallic material, a hard plastic, glass, pyrex and quartz.
Claim 3
Dependent Claim
22 words
The coolant system of claim 1 wherein said metallic material is selected from the group consisting of stainless steel, aluminum, and brass.
Claim 4
Dependent Claim
21 words
The coolant system of claim 1 wherein said hard plastic material is selected from the group consisting of plexiglas and acrylic.
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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) | 1994-10-07 | 1995-04-08 | 1995-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-07 | 1999-04-08 | 1999-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-07 | 2003-04-08 | 2003-10-08 | $7700.00 | Window Closed / Lapsed |