US4832118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Sundstrand Corp
•
Filing: 1986-11-24
•
Granted: 1989-05-23
•
Expires: 2006-11-24
Abstract
Abstract A heat exchanger is illustrated in the form of a pair of juxtaposed chambers defining a first flow path for passing a heated fluid therethrough and a second flow path for passing a cooling medium therethrough. A heat exchanging structure extends between the first and second flow paths in communication therewith. The heat exchanging structure includes at least one composite of thermally conductive fibrous material laid up unidirectionally in a direction between the flow paths for transferring heat from the heated fluid in the first flow path for absorption by the cooling medium in the second flow path.
Inventors
- 👤 John F. Scanlon
- 👤 Shawn A. Warner
- 👤 Alan D. Bengtson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:18
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/02; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/393; Y10S165/905
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
82 words
A heat exchanger, comprising: means defining a first flow path for passing a heated fluid therethrough; means defining a second flow path for passing a cooling medium therethrough; and heat exchanging means extending across both the first and second flow paths, including a composite of thermally conductive fibrous material layed up unidirectionally in a direction between the flow paths for transferring heat from the heated fluid in the first flow path for absorption by the cooling medium in the second flow path.
Claim 2
Dependent Claim
82 words
A heat exchanger, comprising: means defining a first flow path for passing a heated fluid therethrough; means defining a second flow path for passing a cooling medium therethrough; and heat exchanging means extending across both the first and second flow paths, including a composite of thermally conductive fibrous material layed up unidirectionally in a direction between the flow paths for transferring heat from the heated fluid in the first flow path for absorption by the cooling medium in the second flow path.
Claim 3
Dependent Claim
16 words
The heat exchanger of claim 1 wherein said thermally conductive fibers are composed of graphite material.
Claim 4
Dependent Claim
16 words
The heat exchanger of claim 2 wherein said thermally conductive fibers are of highly crystalline graphite.
Claim 5
Dependent Claim
17 words
The heat exchanger of claim 2 wherein said graphite fibers are held together by a bonding matrix.
Claim 6
Dependent Claim
16 words
The heat exchanger of claim 4 wherein said bonding matrix is of an epoxy resin material.
Claim 7
Dependent Claim
17 words
The heat exchanger of claim 5 wherein said epoxy resin material includes a thermally conductive filler material.
Claim 8
Dependent Claim
21 words
The heat exchanger of claim 1 wherein said fibers are held together by a bonding matrix including a thermally conductive material.
Claim 9
Dependent Claim
41 words
The heat exchanger of claim 1 wherein said composite of unidirectional, thermally conductive fibers are layed up in a generally flat construction extending between the flow paths and generally parallel to the flow of the heated fluid and cooling medium therethrough.
Claim 10
Dependent Claim
23 words
The heat exchanger of claim 8, including a plurality of said flat composites extending between the flow paths in generally parallel spaced relationship.
Claim 11
Dependent Claim
88 words
A heat exchanger, comprising: a first chamber for flowing a heated fluid therethrough; a second chamber for flowing a cooling medium therethrough; and a generally flat composite extending across both the first and second chambers with the heated fluid and cooling medium flowing therethrough and oriented generally parallel to said flow, the composite being fabricated of thermally conductive fibers layed up unidirectionally in the direction between the chambers for transferring heat from the fluid in the first chamber for absorption by the cooling medium in the second chamber.
Claim 12
Dependent Claim
88 words
A heat exchanger, comprising: a first chamber for flowing a heated fluid therethrough; a second chamber for flowing a cooling medium therethrough; and a generally flat composite extending across both the first and second chambers with the heated fluid and cooling medium flowing therethrough and oriented generally parallel to said flow, the composite being fabricated of thermally conductive fibers layed up unidirectionally in the direction between the chambers for transferring heat from the fluid in the first chamber for absorption by the cooling medium in the second chamber.
Claim 13
Dependent Claim
23 words
The heat exchanger of claim 10, including a plurality of said flat composites extending between the flow paths in generally parallel spaced relationship.
Claim 14
Dependent Claim
17 words
The heat exchanger of claim 11, including supporting gasket means between the composites for maintaining said spacing.
Claim 15
Dependent Claim
21 words
The heat exchanger of claim 12 wherein said chambers are divided by common wall means defined by said supporting gasket means.
Claim 16
Dependent Claim
16 words
The heat exchanger of claim 10 wherein said thermally conductive fibers are composed of graphite material.
Claim 17
Dependent Claim
16 words
The heat exchanger of claim 14 wherein said thermally conductive fibers are of highly crystalline graphite.
Claim 18
Dependent Claim
17 words
The heat exchanger of claim 14 wherein said graphite fibers are held together by a bonding matrix.
Claim 19
Dependent Claim
16 words
The heat exchanger of claim 16 wherein said bonding matrix is of an epoxy resin material.
Claim 20
Dependent Claim
17 words
The heat exchanger of claim 17 wherein said epoxy resin material includes a thermally conductive filler material.
Claim 21
Dependent Claim
21 words
The heat exchanger of claim 10 wherein said fibers are held together by a bonding matrix including a thermally conductive material.
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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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |