Patent US4008348A successfully refreshed from Google Patents.
US4008348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particulate and solar radiation stable coating for spacecraft
Assignee: National Aeronautics and Space Administration
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Filing: 1975-05-16
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Granted: 1977-02-15
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Expires: 1995-05-16
Abstract
Abstract A laminate thermal control coating for spacecraft comprising a layer of solar-radiation stable film, a layer of particulate-radiation stable film applied to the upper surface of the solar-radiation stable film, and a layer of reflecting material applied to the lower surface of the solar-radiation stable film. The coating experiences no increase in solar radiation absorptance (the proportion of radiant energy absorbed) upon exposure to particular or solar radiation as the particulate radiation is substantially absorbed in the particulate-radiation stable layer and the solar radiation partially absorbed by the particulate-radiation stable layer is transmitted by the solar-radiation stable film to the reflecting material which reflects it back through the laminate and into space.
Inventors
- 👤 Wayne S. Slemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:30
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B15/00; B32B15/04; B32B15/08; B32B27/28; B32B27/281; B32B27/32; B32B27/322; B64; B64G; B64G1/00; B64G1/22; B64G1/52; B64G1/54; B32B2255/00; B32B2255/10; B32B2255/20; B32B2255/205; B32B2605/00; B32B2605/18; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T428/1359; Y10T428/31504; Y10T428/3154; Y10T428/31678; Y10T428/31692; Y10T428/31721
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
In combination: 1. an enclosure and 2. a thermal control coating for said enclosure serving to maintain temperature balance within said enclosure under extended exposure to both particulate and solar radiation, said enclosure serving as a substrate and said thermal control coating being applied to the substrate and including a. a layer of a solar-radiation stable film having a lower and an upper surface; b. a superstratum of a particulate-radiation stable film applied to the upper surface of said solar-radiation stable film; and c. a substratum of a reflecting material applied to the lower surface of said solar radiation stable film, the reflective surface of said substratum being disposed such that solar radiation passing through said superstratum and said solar radiation stable film strikes the reflective surface of said substratum and is reflected back towards said solar radiation stable film and said substratum.
Claim 2
Dependent Claim
143 words
In combination: 1. an enclosure and 2. a thermal control coating for said enclosure serving to maintain temperature balance within said enclosure under extended exposure to both particulate and solar radiation, said enclosure serving as a substrate and said thermal control coating being applied to the substrate and including a. a layer of a solar-radiation stable film having a lower and an upper surface; b. a superstratum of a particulate-radiation stable film applied to the upper surface of said solar-radiation stable film; and c. a substratum of a reflecting material applied to the lower surface of said solar radiation stable film, the reflective surface of said substratum being disposed such that solar radiation passing through said superstratum and said solar radiation stable film strikes the reflective surface of said substratum and is reflected back towards said solar radiation stable film and said substratum.
Claim 3
Dependent Claim
12 words
The combination of claim 1 wherein said particulate-radiation stable film is poly-[N,N'[p,p'-oxydiphenylene]pyromellitimide].
Claim 4
Dependent Claim
13 words
The combination of claim 1 wherein the particulate-radiation stable coating is a polyimide.
Claim 5
Dependent Claim
14 words
The combination of claim 1 wherein the solar radiation stable coating is perfluorinated ethylene-propylene.
Claim 6
Dependent Claim
23 words
The combination of claim 1 wherein the reflecting material is a metal selected from the group consisting of aluminum, silver, gold and copper.
Claim 7
Dependent Claim
92 words
A thermal coating for a substrate which experiences no increase in solar radiation absorptance upon exposure to particulate or solar radiation, comprising: a layer of perfluorinated ethylene-propylene and having an upper and a lower surface; a superstratum of poly-[N,N'-[p,p'-oxydiphenylene] pyromellitimide] applied to the upper surface of said layer of perfluorinated ethylene-propylene; and a reflective substratum of silver applied to the lower surface of said layer of perfluorinated ethylene-propylene, the reflective surface thereof being disposed toward the lower surface of said layer of perfluorinated ethylene-propylene, said silver substratum being bonded to the substrate.
Claim 8
Dependent Claim
92 words
A thermal coating for a substrate which experiences no increase in solar radiation absorptance upon exposure to particulate or solar radiation, comprising: a layer of perfluorinated ethylene-propylene and having an upper and a lower surface; a superstratum of poly-[N,N'-[p,p'-oxydiphenylene] pyromellitimide] applied to the upper surface of said layer of perfluorinated ethylene-propylene; and a reflective substratum of silver applied to the lower surface of said layer of perfluorinated ethylene-propylene, the reflective surface thereof being disposed toward the lower surface of said layer of perfluorinated ethylene-propylene, said silver substratum being bonded to the substrate.
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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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |