Patent US5055741A successfully refreshed from Google Patents.
US5055741A
Expired / Lapsed
US
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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 10:53
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.
References Cited (Backward Citations)
US3401302A
Cited
US3641389A
Cited
US3876901A
Cited
US3885984A
Cited
US4045119A
Cited
US4500996A
Cited
US4617667A
Cited
US4715039A
Cited
US4737678A
Cited
US4868450A
Cited
US4933650A
Cited
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 |