US5288537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High thermal conductivity non-metallic honeycomb
Assignee: Hexcel Corp
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Filing: 1992-03-19
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Granted: 1994-02-22
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Expires: 2012-03-19
Abstract
Abstract A non-metallic honeycomb structure wherein the thermal conductivity of the structure is increased by incorporating high thermal conductivity pitch-based carbon fibers into the non-metallic resin matrix. In addition to increasing thermal conductivity, the pitch-based carbon fibers are utilized to provide controlled directional heat conductance through the honeycomb structure.
Inventors
- 👤 John L. Corden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:16
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/22; B29C70/88; B29C70/882; B29C70/885; B32; B32B; B32B3/00; B32B3/10; B32B3/12; D; D02; D02G; D02G3/00; D02G3/02; B29K; B29K2307/00; B29K2995/00; B29K2995/0003; B29K2995/0005; B29L; B29L2031/00; B29L2031/60; B29L2031/608; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165; Y10T428/29; Y10T428/2913; Y10T428/2918
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
107 words
A high thermal conductivity non-metallic honeycomb structure comprising: a plurality of interconnected walls which define a plurality of interconnected honeycomb cells having a lengthwise direction which extends transversely relative to said walls and a thickness direction which extends parallel relative to said walls, said cell walls comprising; a plurality of non-metallic fibers having low thermal conductivity; a plurality of non-metallic fibers having high thermal conductivity; and a resin matrix in which said low and high thermally conductive fibers are impregnated to thereby provide a honeycomb structure, said high thermally conductive fibers within said resin matrix being oriented to provide directionally controlled heat conductance through said honeycomb structure.
Claim 2
Dependent Claim
107 words
A high thermal conductivity non-metallic honeycomb structure comprising: a plurality of interconnected walls which define a plurality of interconnected honeycomb cells having a lengthwise direction which extends transversely relative to said walls and a thickness direction which extends parallel relative to said walls, said cell walls comprising; a plurality of non-metallic fibers having low thermal conductivity; a plurality of non-metallic fibers having high thermal conductivity; and a resin matrix in which said low and high thermally conductive fibers are impregnated to thereby provide a honeycomb structure, said high thermally conductive fibers within said resin matrix being oriented to provide directionally controlled heat conductance through said honeycomb structure.
Claim 3
Dependent Claim
23 words
A thermally conductive honeycomb structure according to claim 1 wherein said plurality of high thermal conductivity fibers extends substantially in said lengthwise direction.
Claim 4
Dependent Claim
23 words
A thermally conductive honeycomb structure according to claim 1 wherein said plurality of high thermal conductivity fibers extends substantially in said thickness direction.
Claim 5
Dependent Claim
31 words
A thermally conductive honeycomb structure according to claim 1 wherein said plurality of high thermal conductivity fibers extends at an angle of plus or minus 30°-60° relative to said lengthwise direction.
Claim 6
Dependent Claim
21 words
A thermally conductive honeycomb structure according to claim 1 wherein said high thermal conductivity fibers consist essentially of pitch based carbon.
Claim 7
Dependent Claim
33 words
A thermally conductive honeycomb structure according to claim 1 wherein said low thermal conductivity fibers are selected from the group consisting of polyacrylonitrile based carbon fibers, glass fibers, polyaramide fibers and ceramic fibers.
Claim 8
Dependent Claim
21 words
A thermally conductive honeycomb structure according to claim 5 wherein said low thermal conductivity fibers consist essentially of polyacrylonitrile based carbon.
Claim 9
Dependent Claim
25 words
A thermally conductive honeycomb structure according to claim 7 wherein said honeycomb comprises between about 1 to 90 weight percent of said pitch based fiber.
Claim 10
Dependent Claim
106 words
In a non-metallic honeycomb structure comprising a plurality of interconnected walls which define a plurality of interconnected honeycomb cells having a lengthwise direction which extend transversely relative to said walls and a thickness direction which extend parallel relative to said walls, said cell walls comprising a plurality of non-metallic fibers having a low thermal conductivity which are impregnated within a resin matrix, the improvement comprising incorporating a plurality of non-metallic fibers having high thermal conductivity into said resin matrix to thereby provide a honeycomb structure, said high thermally conductive fibers within said resin matrix being oriented to provide directionally controlled heat conductance through said honeycomb structure.
Claim 11
Dependent Claim
106 words
In a non-metallic honeycomb structure comprising a plurality of interconnected walls which define a plurality of interconnected honeycomb cells having a lengthwise direction which extend transversely relative to said walls and a thickness direction which extend parallel relative to said walls, said cell walls comprising a plurality of non-metallic fibers having a low thermal conductivity which are impregnated within a resin matrix, the improvement comprising incorporating a plurality of non-metallic fibers having high thermal conductivity into said resin matrix to thereby provide a honeycomb structure, said high thermally conductive fibers within said resin matrix being oriented to provide directionally controlled heat conductance through said honeycomb structure.
Claim 12
Dependent Claim
24 words
An improved thermally conductive honeycomb structure according to claim 9 wherein said plurality of high thermal conductivity fibers extends substantially in said lengthwise direction.
Claim 13
Dependent Claim
24 words
An improved thermally conductive honeycomb structure according to claim 9 wherein said plurality of high thermal conductivity fibers extends substantially in said thickness direction.
Claim 14
Dependent Claim
32 words
An improved thermally conductive honeycomb structure according to claim 9 wherein said plurality of high thermal conductivity fibers extends at an angle of plus or minus 45° relative to said lengthwise direction.
Claim 15
Dependent Claim
22 words
An improved thermally conductive honeycomb structure according to claim 9 wherein said high thermal conductivity fibers consist essentially of pitch based carbon.
Claim 16
Dependent Claim
34 words
An improved thermally conductive honeycomb structure according to claim 9 wherein said low thermal conductivity fibers are selected from the group consisting of polyacrylonitrile based carbon fibers, glass fibers, polyaramide fibers and ceramic fibers.
Claim 17
Dependent Claim
22 words
An improved thermally conductive honeycomb structure according to claim 13 wherein said low thermal conductivity fibers consist essentially of polyacrylonitrile based carbon.
Claim 18
Dependent Claim
26 words
An improved thermally conductive honeycomb structure according to claim 15 wherein said honeycomb comprises between about 1 to 90 weight percent of said pitch based fiber.
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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) | 1997-02-21 | 1997-08-23 | 1998-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-21 | 2001-08-23 | 2002-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-21 | 2005-08-23 | 2006-02-22 | $7700.00 | Window Closed / Lapsed |