US5582784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making ceramic matrix composite/ceramic foam panels
Assignee: Northrop Grumman Corp
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Filing: 1995-08-16
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Granted: 1996-12-10
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Expires: 2015-08-16
Abstract
Abstract A method of making a ceramic composite panel is disclosed. The composite panel comprises a pair of skins disposed in spaced relationship to one another. The pair of skins comprises fibers of a generic fiber system disposed throughout a pre-ceramic resin in its ceramic state. A ceramic foam is disposed between the pair of skins. Apparatus for forming the panels is also disclosed.
Inventors
- 👤 David E. Daws
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:54
CPC Classifications
B; B32; B32B; B32B37/00; B32B37/14; B32B37/24; B28; B28B; B28B1/00; B28B1/50; B28B19/00; B28B19/0015; B29; B29C; B29C44/00; B29C44/20; B29C44/32; B29C44/321; B29C44/326; C; C03; C03C; C03C14/00; C03C14/002; B32B2315/00; B32B2315/02; C03C2214/00; C03C2214/02; C03C2214/20; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24612; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249969; Y10T428/24997; Y10T428/249976; Y10T428/249987; Y10T428/249988; Y10T428/24999
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
A method of producing a ceramic composite panel comprising the steps of: (a) positioning a pair of fiber reinforced ceramic matrix composite skins in spaced relationship; (b) injecting a mixture of a liquid pre-ceramic resin and a liquid phenolic resin between the pair of skins; c) allowing the resultant mixture to chemically foam and set in the entire space between the skins to form a composite panel; and, (d) heating the resultant composite panel for a time and at a temperature which converts the pre-ceramic resin to a ceramic and out-gasses the phenolic resin.
Claim 2
Independent Claim
94 words
A method of producing a ceramic composite panel comprising the steps of: (a) positioning a pair of fiber reinforced ceramic matrix composite skins in spaced relationship; (b) injecting a mixture of a liquid pre-ceramic resin and a liquid phenolic resin between the pair of skins; c) allowing the resultant mixture to chemically foam and set in the entire space between the skins to form a composite panel; and, (d) heating the resultant composite panel for a time and at a temperature which converts the pre-ceramic resin to a ceramic and out-gasses the phenolic resin.
Claim 3
Independent Claim
64 words
A method of producing a ceramic composite panel comprising the steps of: (a) positioning a pair of fiber reinforced ceramic matrix composite skins in spaced relationship; (b) creating a foam from a pre-ceramic resin in the space between the pair of skins; and, (c) heating the resultant resin foam for a time and at a temperature which converts the pre-ceramic resin to a ceramic.
Claim 4
Independent Claim
64 words
A method of producing a ceramic composite panel comprising the steps of: (a) positioning a pair of fiber reinforced ceramic matrix composite skins in spaced relationship; (b) creating a foam from a pre-ceramic resin in the space between the pair of skins; and, (c) heating the resultant resin foam for a time and at a temperature which converts the pre-ceramic resin to a ceramic.
Claim 5
Dependent Claim
79 words
The method of claim 2 wherein step (b) comprises: injecting a mixture of a liquid pre-ceramic resin and a liquid phenolic resin between the pair of skins and allowing the resultant mixture to chemically foam and set in the entire space between the skins to form a composite panel; and wherein step (c) comprises heating the resultant resin foam for a time and at a temperature which converts the pre-ceramic resin to a ceramic and out-gasses the phenolic resin.
Claim 6
Dependent Claim
60 words
The method of claim 2 wherein: said step (b) comprises mixing a liquid pre-ceramic resin with a liquid phenolic resin, and allowing the resultant mixture to chemically foam and set; and, said step (c) comprises heating the resultant resin foam for a time and at a temperature which converts the pre-ceramic resin to a ceramic and out-gasses the phenolic resin.
Claim 7
Independent Claim
111 words
A method of producing a ceramic composite panel comprising the steps of: a) saturating a first fibrous web with a liquid pre-ceramic resin; b) depositing a mixture of a liquid pre-ceramic resin and a liquid phenolic resin on the first web; c) allowing the resultant mixture to chemically foam and expand into a foam layer; d) saturating a second fibrous web with a liquid pre-ceramic resin; e) disposing the second web on the foam layer while compressing the foam layer to a desired thickness; and, f) heating the resultant composite panel for a time and at a temperature which converts the pre-ceramic resin to a ceramic and out-gasses the phenolic resin.
Claim 8
Independent Claim
111 words
A method of producing a ceramic composite panel comprising the steps of: a) saturating a first fibrous web with a liquid pre-ceramic resin; b) depositing a mixture of a liquid pre-ceramic resin and a liquid phenolic resin on the first web; c) allowing the resultant mixture to chemically foam and expand into a foam layer; d) saturating a second fibrous web with a liquid pre-ceramic resin; e) disposing the second web on the foam layer while compressing the foam layer to a desired thickness; and, f) heating the resultant composite panel for a time and at a temperature which converts the pre-ceramic resin to a ceramic and out-gasses the phenolic resin.
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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) | 1999-12-10 | 2000-06-10 | 2000-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-10 | 2004-06-10 | 2004-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-10 | 2008-06-10 | 2008-12-10 | $7700.00 | Window Closed / Lapsed |