US4541004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerodynamically enhanced heat sink
Assignee: Unisys Corp
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Filing: 1982-11-24
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Granted: 1985-09-10
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Expires: 2002-11-24
Abstract
Abstract An aerodynamically enhanced heat sink is disclosed, which heat sink includes a plurality of metallic pins each having one end thereof affixed to the integrated circuit package and the second end thereof being disposed for heat dissipation. The plurality of pins are made of varying lengths such that a partial hemisphere is formed with the second ends thereof.
Inventors
- 👤 Richard M. Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:44
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/20; H10W40/22; H10W40/226; H10W40/228
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
A heat sink for cooling an integrated circuit package, said heat sink comprising: a plurality of metallic pins each having one end thereof attached to the integrated circuit package and the second end thereof being disposed for heat dissipation, said plurality of pins being of varying lengths such that a partial hemisphere is formed with the second ends thereof.
Claim 2
Dependent Claim
59 words
A heat sink for cooling an integrated circuit package, said heat sink comprising: a plurality of metallic pins each having one end thereof attached to the integrated circuit package and the second end thereof being disposed for heat dissipation, said plurality of pins being of varying lengths such that a partial hemisphere is formed with the second ends thereof.
Claim 3
Dependent Claim
18 words
A heat sink as in claim 1 further characterized by said integrated circuit package being made of ceramic.
Claim 4
Dependent Claim
26 words
A heat sink as in claim 2 further characterized by said plurality of metallic pins each having said one end thereof embedded in a ceramic substrate.
Claim 5
Dependent Claim
17 words
A heat sink as in claim 1 further characterized by said metallic pins being formed of aluminum.
Claim 6
Dependent Claim
17 words
A heat sink as in claim 1 further characterized by said metallic pins being formed of copper.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |