US4567076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite material structure with integrated insulating blanket and method of manufacture
Assignee: Boeing Co
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Filing: 1984-03-23
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Granted: 1986-01-28
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Expires: 2004-03-23
Abstract
Abstract A load-bearing composite material structure (2) includes a first ply (10) of fiber reinforced composite material, and an integral blanket (20) for thermal and flame protection. Blanket (20) includes an outer flame resistant face sheet (28), an intermediate layer of insulation fill (26), and an inner face sheet (22). Sheet (22) is formed by a second ply of fiber reinforced composite material. Preferably, a thin film (24) is provided between ply (22) and fill (26) to prevent absorption of matrix material into fill (26). The layers (22, 24, 26, 28) of blanket (20) are stitched together with flame resistant thread (30). Plies (10, 22) are cured together to bond them together and integrate blanket (20) into structure (2).
Inventors
- 👤 Keith E. Therrien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:06
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; B32B3/12; E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; B32B5/00; B32B5/02; B32B5/06; B32B5/22; B32B5/24; E04C2/30; E04C2/34; E04C2/36; E04C2/365; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033; Y10T428/24149; Y10T428/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
169 words
A load-bearing composite material structure with integral thermal and flame protection, said structure comprising: a first ply of composite material, and an integral blanket bonded to said first ply; said first ply including a thermosetting matrix material, and a fibrous material reinforcing the matrix material; and said integral blanket including: an inner face sheet formed by a second ply of composite material, said second ply including a thermosetting matrix material reinforced by a fibrous material; an outer face sheet that is resistant to flame penetration; a layer of insulation fill between said inner and outer face sheets of sufficient thickness and sufficiently low thermal conductivity to provide a predetermined degree of thermal insulation; and high temperature resistant thread stitched through the layers of the blanket to sew such layers together; said first and second plies being cured together, after the layers of the blanket are stitched together, to bond said plies together to in turn bond the blanket to said first ply and integrate the blanket into the structure.
Claim 2
Dependent Claim
169 words
A load-bearing composite material structure with integral thermal and flame protection, said structure comprising: a first ply of composite material, and an integral blanket bonded to said first ply; said first ply including a thermosetting matrix material, and a fibrous material reinforcing the matrix material; and said integral blanket including: an inner face sheet formed by a second ply of composite material, said second ply including a thermosetting matrix material reinforced by a fibrous material; an outer face sheet that is resistant to flame penetration; a layer of insulation fill between said inner and outer face sheets of sufficient thickness and sufficiently low thermal conductivity to provide a predetermined degree of thermal insulation; and high temperature resistant thread stitched through the layers of the blanket to sew such layers together; said first and second plies being cured together, after the layers of the blanket are stitched together, to bond said plies together to in turn bond the blanket to said first ply and integrate the blanket into the structure.
Claim 3
Dependent Claim
32 words
A structure as described in claim 1, in which the blanket further includes a thin film between said second ply and the fill to prevent absorption of matrix material into the fill.
Claim 4
Dependent Claim
40 words
A structure as described in claim 1, further comprising at least one additional ply of fiber reinforced composite material that is cured together with said first and second plies to form with said first and second plies a load-bearing laminate.
Claim 5
Dependent Claim
53 words
A structure as described in claim 1, further comprising a fiber reinforced composite material honeycomb core, and at least one additional ply of fiber reinforced composite material, which core and additional ply are cured together with said first and second plies to form with said first and second plies a load-bearing honeycomb laminate.
Claim 6
Dependent Claim
19 words
A structure as described in claim 1, in which the outer face sheet comprises a tightly woven ceramic fabric.
Claim 7
Dependent Claim
15 words
A structure as described in claim 5, in which the thread comprises a quartz material.
Claim 8
Independent Claim
125 words
A method of manufacturing a load-bearing composite material structure and of providing said structure with integral flame and thermal protection, said method comprising: forming a first ply of fiber reinforced composite material having a thermosetting matrix; forming a separate second ply of fiber reinforced composite material having a thermosetting matrix; making a blanket for flame and thermal protection; including using said second ply for an inner face sheet, and stitching said second ply with flame resistant thread to an intermediate layer of insulating fill and a flame penetration resistant outer face sheet; and then curing said first ply and said second ply together to bond said plies together to in turn bond the blanket to said first ply and integrate the blanket into the structure.
Claim 9
Independent Claim
125 words
A method of manufacturing a load-bearing composite material structure and of providing said structure with integral flame and thermal protection, said method comprising: forming a first ply of fiber reinforced composite material having a thermosetting matrix; forming a separate second ply of fiber reinforced composite material having a thermosetting matrix; making a blanket for flame and thermal protection; including using said second ply for an inner face sheet, and stitching said second ply with flame resistant thread to an intermediate layer of insulating fill and a flame penetration resistant outer face sheet; and then curing said first ply and said second ply together to bond said plies together to in turn bond the blanket to said first ply and integrate the blanket into the structure.
Claim 10
Dependent Claim
35 words
A method as described in claim 7, further comprising providing a thin film between the layer of fill and said second ply to prevent absorption of matrix material from said second ply into the fill.
References Cited (Backward Citations)
US4086737A
Cited
US4256790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |