US4919995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-insulating device comprising radiation-reflecting materials and a conduction-insulating material
Assignee: Bronzavia Air Equipement SA
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Filing: 1988-02-09
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Granted: 1990-04-24
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Expires: 2008-02-09
Abstract
Abstract In a heat-insulating device comprising radiation-reflecting elements and a conduction-insulating material, the reflecting elements comprise a large number or reflecting flakes that are inserted into and distributed in the insulating material facing the surface through which the radiation has to be stopped. The said flakes are juxtaposed and partially overlap one another so as to conceal the said surface.
Inventors
- 👤 Claude Joly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:52
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/08; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24752; Y10T428/249921; Y10T428/29; Y10T428/2911; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2998
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
67 words
A light-weight, heat-insulation device for aeronautical use which protects a surface from an incident radiation with efficiency at temperatures in the range of at least 800° C., consisting of: a conduction-insulating material, and a plurality of reflecting flakes inserted into and distributed through the conduction-insulating material, the plurality of reflecting flakes being juxtaposed and overlapping each other so as to conceal the surface from the incident radiation.
Claim 2
Dependent Claim
67 words
A light-weight, heat-insulation device for aeronautical use which protects a surface from an incident radiation with efficiency at temperatures in the range of at least 800° C., consisting of: a conduction-insulating material, and a plurality of reflecting flakes inserted into and distributed through the conduction-insulating material, the plurality of reflecting flakes being juxtaposed and overlapping each other so as to conceal the surface from the incident radiation.
Claim 3
Dependent Claim
41 words
A device according to claim 1, wherein the plurality of flakes are oriented so that the largest side of each flake of the plurality of flakes is substantially orthogonal to the main direction of the incident radiation that strikes the device.
Claim 4
Dependent Claim
26 words
A device according to claim 1, wherein the plurality of flakes are distributed in the form of sheets placed between two thicknesses of the conduction-insulating material.
Claim 5
Dependent Claim
14 words
A device according to claim 3, wherein the sheets are made of agglomerated flakes.
Claim 6
Dependent Claim
18 words
A device according to claim 3, wherein the sheets are held in position by means of a binder.
Claim 7
Dependent Claim
17 words
A device according to claim 3, wherein the sheets are held in position by their electrostatic properties.
Claim 8
Dependent Claim
18 words
A device according to claim 1, wherein the flakes are distributed throughout the volume of the insulating material.
Claim 9
Dependent Claim
16 words
A device according to claim 1, wherein the conduction-insulating material is made of a long-fibered wool.
Claim 10
Dependent Claim
27 words
A device according to claim 8, wherein the plurality of reflecting flakes form at least one sheet interposed between two thicknesses of fibers of said long-fibered wool.
Claim 11
Dependent Claim
22 words
A device according to claim 8, wherein the plurality of reflecting flakes are distributed homogeneously between the fibers of said long-fibered wool.
Claim 12
Dependent Claim
15 words
A device according to claim 1, wherein the flakes are made of a reflecting metal.
Claim 13
Dependent Claim
21 words
A device according to claim 1, wherein the flakes consist of flakes made of supporting material coated with a reflecting material.
Claim 14
Dependent Claim
14 words
A device according to claim 12, wherein the flakes consist of gold-coated mica flakes.
Claim 15
Dependent Claim
14 words
A device according to claim 1, wherein the conduction-insulating material is made of resin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-23 | 1993-10-23 | 1994-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-23 | 1997-10-23 | 1998-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-23 | 2001-10-23 | 2002-04-24 | $7700.00 | Window Closed / Lapsed |