US4141224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed loop spray cooling apparatus
Assignee: National Aeronautics and Space Administration
•
Filing: 1977-08-31
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Granted: 1979-02-27
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Expires: 1997-08-31
Abstract
Abstract A closed loop apparatus for spraying coolant against the back of a radiation target. The coolant is circulated through a closed loop with a bubble of inert gas being maintained around the spray. Mesh material is disposed between the bubble and the surface of the liquid coolant which is below the bubble at a predetermined level. In a second embodiment no inert gas is used, the bubble consisting of vapor produced when the coolant is sprayed against the target.
Inventors
- 👤 Donald L. Alger
- 👤 William B. Schwab
- 👤 Edward R. Furman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:00
CPC Classifications
G; G21; G21K; G21K5/00; G21K5/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
102 words
A closed loop apparatus for spraying a radiation target with liquid coolant comprising: a loop for circulating the liquid coolant including a coolant reservoir, a gastight chamber communicating with the target, and first and second tubular connections between the reservoir and the chamber for circulating the liquid coolant therethrough; means disposed within the chamber and connected to one of the tubular connections for spraying the liquid coolant against the back of the target; said chamber containing vaporized coolant; a vacuum line interconnecting the reservoir with the chamber; an isolation valve; and a pump communicating with the vacuum line through the isolation valve.
Claim 2
Dependent Claim
102 words
A closed loop apparatus for spraying a radiation target with liquid coolant comprising: a loop for circulating the liquid coolant including a coolant reservoir, a gastight chamber communicating with the target, and first and second tubular connections between the reservoir and the chamber for circulating the liquid coolant therethrough; means disposed within the chamber and connected to one of the tubular connections for spraying the liquid coolant against the back of the target; said chamber containing vaporized coolant; a vacuum line interconnecting the reservoir with the chamber; an isolation valve; and a pump communicating with the vacuum line through the isolation valve.
Claim 3
Dependent Claim
23 words
The closed loop apparatus recited in claim 1 including: means for holding the temperature of the liquid coolant in the coolant reservoir constant.
References Cited (Backward Citations)
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US2924635A
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US2976695A
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US3091098A
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US3237419A
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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) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |