US5290904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat shield
Assignee: Triangle Research and Development Corp
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Filing: 1991-07-31
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Granted: 1994-03-01
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Expires: 2011-07-31
Abstract
Abstract A thermal shield comprising first and second substantially flat flame resistant covering layers adapted to overlie each other. A thermal energy absorbing material is positioned between the respective layers in sandwich fashion. The thermal energy absorbing material may comprise a phase change material in bulk, micro or macro encapsulated and which may further be embedded within a base material to provide enhanced thermal protection.
Inventors
- 👤 David P. Colvin
- 👤 Yvonne G. Bryant
- 👤 James C. Mulligan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:15
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/36; C; C09; C09K; C09K5/00; C09K5/02; C09K5/06; C09K5/063; F; F16; F16L; F16L59/00; F16L59/02; F16L59/029; F28; F28D; F28D20/00; F28D20/02; F28D20/023; B32B2255/00; B32B2255/20; B32B2255/205; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2367/00; Y; Y02; Y02E; Y02E60/00; Y02E60/14; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/23; Y10T428/234; Y10T428/239; Y10T428/24; Y10T428/24777; Y10T428/24793; Y10T428/249921; Y10T428/249994; Y10T428/249995; Y10T428/249997; Y10T428/25; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
130 words
A heat shield characterized by its ability to insulate from heat or cold and comprising: a first covering layer; a second covering layer overlying said first covering layer, said first covering layer and said second covering layer being flat and non-flammable; a base means positioned between said first covering layer and said second covering layer; a plurality of microcapsules integral with and dispersed throughout said base means and being held in place thereby, said microcapsules having a diameter of less than about 10 microns and containing paraffinic hydrocarbon as a thermal energy absorbing means and wherein said microcapsules are adapted to withstand repeated latent heat of fusion thermocycling; whereby the shield exhibits enhanced thermal shielding properties and repeatability of thermal response over extended time periods when subjected to thermal energy.
Claim 2
Dependent Claim
130 words
A heat shield characterized by its ability to insulate from heat or cold and comprising: a first covering layer; a second covering layer overlying said first covering layer, said first covering layer and said second covering layer being flat and non-flammable; a base means positioned between said first covering layer and said second covering layer; a plurality of microcapsules integral with and dispersed throughout said base means and being held in place thereby, said microcapsules having a diameter of less than about 10 microns and containing paraffinic hydrocarbon as a thermal energy absorbing means and wherein said microcapsules are adapted to withstand repeated latent heat of fusion thermocycling; whereby the shield exhibits enhanced thermal shielding properties and repeatability of thermal response over extended time periods when subjected to thermal energy.
Claim 3
Dependent Claim
16 words
A heat shield according to claim 1 wherein said base means comprises a silicone rubber binder.
Claim 4
Dependent Claim
25 words
A heat shield according to claim 1 further including additional covering layers and additional layers of thermal energy absorbing means positioned between adjacent covering layers.
Claim 5
Dependent Claim
22 words
A heat shield according to claim 1 wherein said first covering layer and said second covering layer further include metal covering layer.
Claim 6
Dependent Claim
137 words
A heat shield characterized by its ability to insulate from heat or cold and comprising: a first flat non-flammable covering layer; a second flat non-flammable covering layer adapted to overlie said first covering layer; and a base means positioned between said first covering layer and said second covering layer; a plurality of microcapsules having a diameter of less than about 10 microns integral with and dispersed throughout said base means and being held in place thereby, said microcapsules being adapted to withstand repeated latent heat of fusion thermocycling and containing a paraffinic hydrocarbon selected from the group consisting of n-Octacosane, n-Heptacosane, n-Hexacosane, n-Pentacosane, n-Tetracosane, n-Tricosane, n-Docosane, n-Heneicosane, n-Eicosane, n-Nonadecane, n-Octadecane, n-Heptadecane, n-Hexadecane, n-Pentadeceane, n-Tetradecane, and n-Tridecane; whereby the shield exhibits enhanced thermal shielding properties and repeatability of performance over extended time periods when subjected to thermal energy.
Claim 7
Dependent Claim
137 words
A heat shield characterized by its ability to insulate from heat or cold and comprising: a first flat non-flammable covering layer; a second flat non-flammable covering layer adapted to overlie said first covering layer; and a base means positioned between said first covering layer and said second covering layer; a plurality of microcapsules having a diameter of less than about 10 microns integral with and dispersed throughout said base means and being held in place thereby, said microcapsules being adapted to withstand repeated latent heat of fusion thermocycling and containing a paraffinic hydrocarbon selected from the group consisting of n-Octacosane, n-Heptacosane, n-Hexacosane, n-Pentacosane, n-Tetracosane, n-Tricosane, n-Docosane, n-Heneicosane, n-Eicosane, n-Nonadecane, n-Octadecane, n-Heptadecane, n-Hexadecane, n-Pentadeceane, n-Tetradecane, and n-Tridecane; whereby the shield exhibits enhanced thermal shielding properties and repeatability of performance over extended time periods when subjected to thermal energy.
Claim 8
Dependent Claim
45 words
A heat shield according to claim 5 wherein said first covering layer and said second covering layer are connected together about at least a portion of their outer peripheral edges thereby retaining said thermal energy absorbing mean between said respective first and second covering layers.
Claim 9
Dependent Claim
21 words
A heat shield according to claim 5 wherein said first and second flame resistant covering layers comprise a metal covered mylar.
Claim 10
Dependent Claim
12 words
A heat shield according to claim 7 wherein said metal comprises aluminum.
Claim 11
Dependent Claim
16 words
A heat shield according to claim 5 wherein said base means comprises a silicone rubber binder.
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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) | 1997-02-28 | 1997-08-30 | 1998-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-28 | 2001-08-30 | 2002-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-28 | 2005-08-30 | 2006-03-01 | $7700.00 | Window Closed / Lapsed |