US4655866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for thermal protection from ablation and vibrations and manufacturing method
Assignee: Airbus Group SAS
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Filing: 1985-08-09
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Granted: 1987-04-07
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Expires: 2005-08-09
Abstract
Abstract A thermal protection device is intended for protecting structures submitted to high temperature and high speed ablative flow in the presence of high frequency vibrations and of the type comprising an armature containing a binder layer. The armature is a fringed meshing comprising a meshed portion submitted to ablative flow and fringes thereon directed to the structure surface to be protected with a predetermined orientation relative to the direction of said flow. Such a device is obtained for example by winding on a mandrel a fringed strip previously impregnated with a polymerizable resin which is polymerized after forming. The device can protect reactor conduits conveying high temperature corrosive gases.
Inventors
- 👤 Christiane Ferrier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:23
CPC Classifications
B; B29; B29B; B29B15/00; B29B15/08; B29B15/10; B29B15/12; B29B15/122; B29B15/125; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/581; B29C53/582; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/24; F; F02; F02K; F02K1/00; F02K1/78; F02K1/82; F02K9/00; F02K9/97; F02K9/974
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
83 words
A thermal protection device for protecting hollow structures of a monotonous evolutive cross-section intended to be submitted to high temperature ablative flow in the presence of vibrations, of the type formed by a layer of insulating polymerized resin forming a binder and containing an armature therein, said armature being a fringed meshing comprising a meshed portion submitted to said ablative flow thereon and fringes directed in a predetermined orientation relative to the direction of said flow toward the structure surface to be protected.
Claim 2
Dependent Claim
83 words
A thermal protection device for protecting hollow structures of a monotonous evolutive cross-section intended to be submitted to high temperature ablative flow in the presence of vibrations, of the type formed by a layer of insulating polymerized resin forming a binder and containing an armature therein, said armature being a fringed meshing comprising a meshed portion submitted to said ablative flow thereon and fringes directed in a predetermined orientation relative to the direction of said flow toward the structure surface to be protected.
Claim 3
Dependent Claim
16 words
A device according to claim 1, wherein the meshed portion forms a substantially undeformable three-dimensional network.
Claim 4
Dependent Claim
47 words
A device according to claim 1, wherein the percentage by weight of the armature relative to said device, for each determined type of fringed meshing, is of a value selected between 5 and 80%, with the proportion of meshing relative to said device being defined within 2%.
Claim 5
Dependent Claim
24 words
A device according to claim 1, wherein the meshed portion is adapted to resist a temperature of 2000° C. for several tens of seconds.
Claim 6
Dependent Claim
35 words
A device according to claim 1, wherein the impregnated and polymerized meshed portion is adapted to resist for several tens of seconds to vibrations having a frequency in the order of 1000 to 2500 Hz.
Claim 7
Dependent Claim
20 words
A device according to claim 1, wherein the fringed meshing is formed at least partly from a weavable refractory material.
Claim 8
Dependent Claim
21 words
A device according to claim 1, wherein the fringed meshing is formed at least partly from a thermally insulating weavable material.
Claim 9
Dependent Claim
29 words
A device according to claim 1, wherein the fringed meshing contains at least one material selected from the group comprising carbon, silica, silicon carbide, glass, aromatic polyamide fibers, silico-alumina.
Claim 10
Dependent Claim
33 words
A device according to claim 1, wherein the binder is a heat settable resin of a rigidimeric heat stable nature selected from the group of an organic, phenolic, furannic, polyimide or polystyrilpyridin resin.
Claim 11
Dependent Claim
13 words
A device according to claim 1, wherein the binder is a silicone resin.
Claim 12
Dependent Claim
12 words
A device according to claim 1, wherein the binder is a silicate.
Claim 13
Dependent Claim
13 words
A device according to claim 10, wherein the binder is an elastomeric silicone.
Claim 14
Dependent Claim
24 words
A device according to claim 1, adapted to internal protection of a hollow structure in which the armature is a helically wound fringed strip.
Claim 15
Independent Claim
70 words
A method of manufacturing a thermal protection device for internal protection of hollow conduits comprising moving a fringed strip through an impregnation resin, winding such a strip onto a mandrel so that the meshing is in contact with the mandrel, orienting the fringes to the wall to be protected at a given inclination relative to the mandrel axis, forming under pressure the wound impregnated strip and polymerizing the impregnation resin.
Claim 16
Independent Claim
70 words
A method of manufacturing a thermal protection device for internal protection of hollow conduits comprising moving a fringed strip through an impregnation resin, winding such a strip onto a mandrel so that the meshing is in contact with the mandrel, orienting the fringes to the wall to be protected at a given inclination relative to the mandrel axis, forming under pressure the wound impregnated strip and polymerizing the impregnation resin.
Claim 17
Dependent Claim
26 words
A method according to claim 14, wherein the impregnation resin is polymerized in situ after engaging the wound impregnated strip into a conduit to be protected.
Claim 18
Dependent Claim
24 words
A method according to claim 14, wherein the impregnated strip is calibrated prior to winding thereof so as to regulate the impregnation resin contents.
Claim 19
Dependent Claim
13 words
A method according to claim 16, wherein the fringes are dispersed after winding.
Claim 20
Dependent Claim
15 words
A device according to claim 1 wherein the fringed meshing is formed of curled strands.
Claim 21
Dependent Claim
19 words
A device according to claim 1 wherein the fringed meshing is formed of alternating curled strands and free strands.
Claim 22
Dependent Claim
22 words
A device according to claim 1 wherein the fringed meshing is formed of free strands and curled strands superposed on one another.
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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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |