US4143710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer fin structure
Assignee: Fedders Corp
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Filing: 1977-02-09
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Granted: 1979-03-13
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Expires: 1997-02-09
Abstract
Abstract An improved heat transfer fin structure of the type normally fabricated from sheet metal and wrapped about a conduit to provide enhanced heat transfer efficiency between the conduit and a fluid in contact with the conduit, has a plurality of elongated leg portions spaced apart from each other and openings defined in the space between the leg portions. The structure provides the advantage of high efficiency combined with high peripheral stability.
Inventors
- 👤 Gerald E. La Porte
- 👤 Charles L. Osterkorn
- 👤 Salvatore M. Marino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:46
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/34; F28F1/36; F24; F24S; F24S10/00; F24S10/70; F24S10/75; F24S2010/751; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49355; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
In a heat transfer fin structure of the type normally fabricated from sheet metal and operable to be secured to and extending from an object to provide increased effective surface area to the object for enhanced transfer of heat between the object and a fluid in contact with the object, the improved configuration consisting of: a plurality of elongated leg portions spaced apart from each other and forming a first row; and a plurality of openings defined by said structure, spaced apart from each other and disposed between adjacent leg portions, each said opening being elongated and substantially diamond shaped, with the longer axis of said diamond shape being substantially equidistant from and in a plane defined by adjacent leg portions.
Claim 2
Dependent Claim
121 words
In a heat transfer fin structure of the type normally fabricated from sheet metal and operable to be secured to and extending from an object to provide increased effective surface area to the object for enhanced transfer of heat between the object and a fluid in contact with the object, the improved configuration consisting of: a plurality of elongated leg portions spaced apart from each other and forming a first row; and a plurality of openings defined by said structure, spaced apart from each other and disposed between adjacent leg portions, each said opening being elongated and substantially diamond shaped, with the longer axis of said diamond shape being substantially equidistant from and in a plane defined by adjacent leg portions.
Claim 3
Dependent Claim
98 words
In combination, a conduit and a heat transfer fin structure, said heat transfer fin structure being disposed circumferentially about at least a portion of said conduit and consisting of a plurality of elongated leg portions spaced apart from each other and forming a first row; and a plurality of openings defined by said structure, spaced apart from each other and disposed between adjacent leg portions, each said opening being elongated and substantially diamond shaped with the longer axis of said diamond shape being substantially equidistant from and in a plane defined by the adjacent of said leg portions.
Claim 4
Dependent Claim
98 words
In combination, a conduit and a heat transfer fin structure, said heat transfer fin structure being disposed circumferentially about at least a portion of said conduit and consisting of a plurality of elongated leg portions spaced apart from each other and forming a first row; and a plurality of openings defined by said structure, spaced apart from each other and disposed between adjacent leg portions, each said opening being elongated and substantially diamond shaped with the longer axis of said diamond shape being substantially equidistant from and in a plane defined by the adjacent of said leg portions.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |