US3774681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-shaped heat radiator
Assignee: Individual
•
Filing: 1972-04-03
•
Granted: 1973-11-27
•
Expires: 1992-04-03
Abstract
Abstract A heat sink especially well-suited for use in dissipating heat from irregularly shaped surfaces. The heat sink comprises an endless coiled carrying spring of high heat conductive material, such as a copper alloy, in contact with, and suitably encompassing, the periphery of the irregularly shaped surface, and a plurality of heat radiating fins, preferably of copper, detachably mounted on, and either lateral to, or longitudinal to, the coiled carrying spring, to best utilize the most advantageous air flow in the mounting area.
Inventors
- 👤 T Wirtanen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:17
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28D; F28D21/00; F28D2021/0019; F28D2021/0028; F28D2021/0029
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
55 words
A heat sink adapted to encompass an irregularly shaped surface from which heat is to be dissipated; a coiled carrying spring made of material having the property of high heat dissipation; and fin means detachably mounted to said coiled carrying spring and in heat exchange contact therewith for dissipating heat from said coiled carrying spring.
Claim 2
Dependent Claim
55 words
A heat sink adapted to encompass an irregularly shaped surface from which heat is to be dissipated; a coiled carrying spring made of material having the property of high heat dissipation; and fin means detachably mounted to said coiled carrying spring and in heat exchange contact therewith for dissipating heat from said coiled carrying spring.
Claim 3
Dependent Claim
20 words
A heat sink, as set forth in claim 1, wherein said coiled carrying spring is made of a copper alloy.
Claim 4
Dependent Claim
18 words
A heat sink, as set forth in claim 1, wherein said coiled carrying spring is in endless form.
Claim 5
Dependent Claim
66 words
A heat sink, as set forth in claim 1, wherein said detachably mounted fin means for dissipating heat from said coiled carrying spring is a plurality of heat radiating fins having mounting prongs, with said fins made of a material having the property of high heat dissipation, and with said fins detachably mounted on said coiled carrying spring at suitable locations along said coiled carrying spring.
Claim 6
Dependent Claim
37 words
Heat radiating fins, as set forth in claim 4, wherein said fins are detachably mounted on said coiled carrying spring at suitable locations along said coiled carrying spring in selected positions lateral to said coiled carrying spring.
Claim 7
Dependent Claim
37 words
Heat radiating fins, as set forth in claim 4, wherein said fins are detachably mounted on said coiled carrying spring at suitable locations aLong said coiled carrying spring in a position longitudinal to said coiled carrying spring.
Claim 8
Dependent Claim
16 words
Heat radiating fins, as set forth in claim 4, wherein said fins are made of copper.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |